Biohazard Containment Protocols (4/5)

Story by Serathin on SoFurry

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When Tanakeah is given a mission to infiltrate a research lab in order to steal some files he always knows that there is the potential for being double-crossed or to lose out on the payment, but when it turns out that the target is him it kicks off a betrayal of epic proportions that leads to the release of a parasite bio-weapon on an unsuspecting city.

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The elevator almost didn't reach the floor required as Tana became unable to contain himself, the flesh sloughing off his body nearly coating the entire car as he went up to the building proper. When he did make it there the elevator only opened about half-way, which prompted him to have to crawl his way out while his squishy body slid through to the other side. It had done its job and gotten him out of the facility beneath the building though, which meant that it would be much harder for anyone to stop him. If he wanted to continue on his path of revenge though, something the parasite fully encouraged, he would need to go through security first. Their flesh began to spread like quickly growing moss as he made his way over towards where the arrows pointed him to the security station, stopping only when he had gotten sufficiently away from it.

As Tana approached he kept around the corner and saw the large room that housed the entire security department that monitored the skyscraper above them. Whether by luck or how quickly he had moved it appeared they hadn't seen anything unusual yet that would sound an alarm, though he knew it wouldn't be long before they did. The problem was that the only door in and out of the room faced most of the people that were working in there and it was key card locked. There were a number of windows that he could break but they would also see that, especially if they were bulletproof.

"Stop that," Keah quickly chided.

"Stop what?" Tana hissed back.

"You're thinking like your former life," Keah pointed out. "You are a parasitic creature, how would a parasite infest a place?"

Think like a parasite, Tana looked at the room again and then at the surrounding area. A parasite didn't have to go in guns blazing, it would be insidious, powerful but still hidden. It would go somewhere that wouldn't be expected of anything else, and as that thought swirled around in his corrupted mind he saw something that would work. It was a ventilation shaft that was in the wall, one that connected to the security room as well, and though it would have been too small for Tana to use in his normal body he quickly went over and began to push his body into it. In a matter of minutes he had slid inside the shaft and began to travel along it while his tentacles wiggled outside of the entrance until the entirety of his body was pulled inside.

In the security room the breach of their ventilation system had gone unnoticed, but as one of the team cycled through the cameras as usual he stopped when he saw something unusual on one of his screens. "Hey Captain," the otter called out, which brought the horse man over to his desk. "Check this out."

When the horse looked at the screen himself he saw nothing but blackness, which caused him to stand back up and take a drink of his coffee before he rubbed his jaw. "Well that is unusual," the stallion replied. "Is it malfunctioning?"

"No sir, malfunctioning would give us a static screen, not a black one," the otter explained. "It's like something is covering up the lens, but that camera is ten feet off the ground."

"It can't be a break-in," the horse said as he looked at their alarm board that had all green lights in all zones. "What sector is this outage in?"

"That's the thing," the otter stated as he looked out nervously. "This is our floor, right outside the elevator that leads to the... you know... that place."

The Captain knew exactly what his subordinate was talking about, the facility that was deep underneath the building outside of their jurisdiction unless they were specifically called to it. No one had set off any alarms though as he looked at the special section of the board reserved just for them, and it's fairly obvious when it happens since every light in the room starts to flash. "If it's right outside our door than it should be easy to check," the horse man said with a huff before he turned to see a lizardman that stood a few feet away from him. "Hey you, go outside with him and see what the hell is going on out there."

"One second Captain," the lizardman said as he looked up at the vent that was situated a few feet above him in the ceiling as he wielded a long broom handle. "I think I saw a spider or something up there, looked big. I'm not letting something like that drop on me."

"We don't get paid to be exterminators," the Captain replied as the lizardman looked down at him. "Now go out there and find out what's going on!"

"But I hate spiders!" the lizardman shouted as he held his hands up in the air. "If I don't get it now then it'll-"

The reptilian creature didn't have a chance to finish his sentence as the grate popped off and a fleshy purple tentacle darted down, wrapping around his waist and pulling him up towards the vent where his body created a hole in the ceiling and disappeared before anyone could react. Several officers quickly attempted to pull out their firearms but a few seconds after the lizardman had disappeared something else came crashing down from the ceiling instead. Tana's maw opened in a loud roar that reverberated off of the walls and with his six eyes he counted and marked all the members of the security team that were in the room as the wiggling pod shaped vaguely like a lizardman squirmed around on the floor.

The second that Tana touched the ground he immediately spread his tentacles outwards, having one wrap around as many of the officers as he could in order to restrain them to prevent activating the alarm. When he saw he wouldn't get all of them Keah saw it as well and the parasite cobra felt the appendages that made up his lower body split and form into several thinner ones that continued to do the job. He also held out his arms and used his wrist tentacles to ensnare six more, each of them grabbed by the arms or legs to keep them restrained. At the same time the four on his back went straight for the ones that thought they could hide behind him and soon Tana could hear muffled cries come from them as the flower pods on the ends of them latched onto their heads.

That just left the two that were sitting at the computer desk closest to where Tana had landed, the otter looking at him in pure fear while the stallion took out his sidearm. The tentacle creature could tell that the horse was the one in charge from the extra markings on his uniform, which made him the perfect target as he reached forward just in time to grab the gun. It fired several times but the parasitic flesh muffled the shots and Tana felt nothing as he tossed the weapon aside before grabbing the crotch of his pants and ripped them away. That was all the parasite naga needed to expose as he lurched forward and opened his jaws again, all three of his tentacle tongues pushing into his maw as they slithered over one another to try and make room.

The stallion groaned and gurgled as the flesh of his mouth began to stretch to accommodate the tentacle tongues as Tana's jaws clamped down on the Captain's head and completely engulfed it. At the same time one of the parasite cobra's members took the petals and suctioned against the thick horsecock that was already half-hard. The stallion's flesh bulged as it was filled with parasitic fluids, his balls swelling as soon as his hips bucked up from the stimulation. The shouts and cries of the two dozen officers that wiggled in his grasp continued to caused the creature to tremble as his focus remained on the stallion's corruption as parasitic flesh gushed down his neck and over his body to cocoon him.

At the same time the otter attempted to sneak away but two of the six eyes focused directly at him, the other hand of the monster reached down and ripped the seat of his pants out. That exposed his tailhole as he was knocked to the ground, and before he could get away something had already slithered underneath it and pushed past the ring of muscle. Even as it began to thrust into him he tried to move away but his pants had begun to tent and one of the buttons of his shirt popped open as his stomach extended. Soon the otter didn't move at all as the growing bulge continued to swell up towards his chest while purple fluid began to leak out of his mouth, the same gooey substance that dripped down the stallion's quivering thighs as three similar bumps appeared underneath his extremely distended throat.

The others that were merely restrained, though the flesh of the tentacle had already started to cocoon them and keep their legs and arms together as some were stuck to the floor and walls. With Tana standing there the parasite flesh had quickly spread out from him and those that were caught in it became engulfed without Tana even needing to touch them. For those that were caught in his wrist tentacles once Tana had his hands free he brought them over, ripping their clothes off before putting his webbed hands on their heads and slathering his pulsating purple flesh over their faces. It was spread on so thick that their features were completely obscured and when he had one in each hand he pushed them against one another to cocoon them together.

There was a coughing sound behind the parasitic cobra and two of his eyes looked over to see that the four he had the tentacles on had been disconnected, though instead of running they continued to hold their necks and chests. Unlike the others that had either fluid or flesh restricting them Tana and Keah had formulated an entirely new ability as the security guards had purple clouds come out of their mouths. The spores had completely filled their bodies and the effects were almost immediate, the coughing ceased but purple liquid had dripped from their muzzles as well as staining the tents in front of their pants that grew bigger with every second. Eventually they began to disrobe themselves as the lust filled their forms while one hand stroked their growing cocks, all of them eventually either sitting against the wall or lying down as their muscles began to twitch and swell.

Tana pulled his jaw back and let two of the tentacle tongues slide out of the horse's maw, although it was hard to tell he was a stallion as the thick goo that left the Captain completely encased. He was so coated that even as he twitched and quivered in purse pleasure he continued to remain standing on his hooved feet. The horse's throbbing cock had already surpassed the cobra's and he hadn't been close to completely infesting this one but already his body had begun to heavily mutate. When he stepped away the horse's body writhed as tentacles began to sprout from everywhere; at first it was his back and his pectorals, but soon they pushed their way out of his shoulders, mouth, and his arms began to split into a thick set of wiggling appendages.

Meanwhile the otter had the opposite effect happening to him, the fur still on his body as his thick tail stretched and morphed along with his own member. The insides of the man had thick tentacles that ran through his form as the cock that had been pumping into his system had gotten past his chest and had started to push up into his neck. Tana used the prehensile member to get the otter back up onto his feet and it caused the head of the cock to push up into his throat. Tana felt a thrill of joy as the transforming creature was massaging the sensitive flesh with his entire body until it eventually emerged out of his stretched maw and began to coat the otter's face as the parasite cobra orgasmed.

Once he had finished with them he left his cocks to continue to thrust into the two, though eventually the thick, veiny flesh was so thick on them that they hardly recognized them as the species they were. He ran his hands over them and felt them quiver, felt the parasite infesting them and transforming them so heavily that they would be completely unrecognizable. They would become monsters, and the very thought caused another spike of pleasure to go through his system as he finally got to the ones that he had pinned against the walls. Many of them had already gotten their heads covered and Tana moved to remove their clothing as well so he could continue to see their bodies change unimpeded.

Just as he got to the last one he heard a loud, wet moan and looked over to see that one of the four he had filled with spores had managed to crawl up to him. Without the parasitic flesh covering his body like the others Tana could see how much they had changed as it looked up at him with pleading eyes. "I don't know why you're fighting this," Tana said as he watched the cheetah's tongue thicken, more tendrils pushing their way out of his nose and ears with his cock so thick it dragged against the ground. "You know that you're already infected just like everyone else in this room and soon you will mutate, and I will enjoy watching as you serve your new master."

Whether or not the cheetah could hear him he didn't know, but soon he fell on his stomach as he orgasmed right there. Just like the other three that had covered themselves with their spurting cocks the feline's stomach and chest became coated it in while several tentacles pushed out of his back. Tana saw that they were a similar configuration to the ones on his own body and spores had started to leak out of his mouth and nose as the tentacles leaked the same. The four that he had transformed with his back tentacles had become spore producers as well as they progressed along further than those that were merely encased in parasitic flesh.

As Tana looked around the security room and watched the purple flesh creep over the walls and electronics he knew that they weren't the only ones that were evolving. He could feel the desire to continue to spread get ramped up to eleven, spurred on by Keah who wanted him to continue to grow even bigger. Even with this place under his control if he got caught by someone else, or if they had multiple security offices that serviced the actual skyscraper they would call in the real police or worse a hazmat containment team. He couldn't let that happen, but his body had grown and with his powers growing it caused the creep of parasitic flesh from his body to grow even more to the point where the large office area had almost already been completely covered.

With stealth quickly no longer becoming an option Keah presented him with a different option, a full-blown rampage that would take the entire skyscraper. Tana realized that this would mean completely embracing the corruption that had infested him, but as he looked around he realized that being a bioweapon had its perks. All those writhing, pulsating forms transforming into parasitic monsters just like him, completely subservient to his needs had caused him to practically drool. The original problem remained however on how to reach all the people that were in this building. From the security office he could see that this was a skyscraper with quite a few floors that he had to make sure didn't call for help, and as he caught a whiff of the spores that came from the one next to him a plan had started to form.

For it to work though he needed some information, the parasite cobra turned his head to look at the pillar of parasitic flesh that was the horse Captain. He slithered over towards him and opened his jaws once more, and while one went back into the throat to give him more pleasure the other two pushed into the spot where his ears were. With the parasite already making its way through his body it made it easy for the ear holes to stretch around them, connecting into his mind in order to get more information. There was a few items that he plumbed from the lust-stricken guy and to help spur him along he stroked the increasingly tentacular cock while he got what he needed.

After a few minutes of the tentacles wiggling around inside of the former horse's skull he had everything he needed, pulling away and going over to one of he consoles. Though it was covered with the rubbery purple flesh it was still operational and he used it to initiate a passive lockdown on the entire building. Nothing in or out, that would make things easier for the next phase of his plan. With the parasite inside him driving his lust for both revenge and infestation he quickly made his way to the area that he had also grabbed from the horse's mind. There was no reason to hide himself now, and anyone that stood in his way was caught, wrapped up, and cocooned into the floor or wall before he moved on.

Finally he arrived at his destination, the ventilation system for the entire building. A grin spread on his alien maw as he saw the pipes that fed purified air into the vents themselves. He found it funny that what had started in a vent was about to end in one, at least for those that had betrayed him in the first place. Finally his revenge was about to be fulfilled, and he found himself practically cackling as he ripped open the feeds to the pipes and clamped down his back tentacles onto him. From the security office to this point he had been filling his own body with spores, and once he had created a tight seal he began to pump them into the system.

Almost immediately the spores were carried up, the metal of the shafts started to grow with parasitic flesh as they traveled. Even though he couldn't see it he could sense that they had started to blow out of the vents and into the lungs and on the bodies of those in the skyscraper. Like the creatures that were below in the facility being stalked by the former tiger scientist and the transforming security personnel he could feel the others starting to change. After about fifteen minutes the entire building was flooded and he could almost see the workers wondering why tentacles had started to sprout from their bodies or their lusts started to get more intense by the second. He could sense them all, and with every new sensation of infestation that piled onto him the more his mental state deteriorated under it.

But Tana didn't try to retain his sanity, instead he embraced the cheers of the parasite and felt himself orgasm immediately from his acceptance. As his tentacle cocks sprayed his incredibly infectious cum over the floor and ventilation system it created a spore plant that would continue to keep the atmosphere filled with spores. Spread... infect... grow... both Tana and Keah found themselves repeating it in unison as he moved from the maintenance area back to the skyscraper. This building was his, and soon it would be a glorious nest for him and his new kind to thrive in.

********************************

As day turned to night the skyscraper was surrounded by the CDC and multiple other vehicles that had surrounded the building. Despite Tana's best efforts those few that had staved off the infestation long enough managed to call for help, and the result was a massive biohazard response that surrounded the building. Inside hundreds of parasite creatures roamed the halls, spreading the flesh of their kind over walls and windows as well as looking for anyone that might have somehow escaped the initial wave of infestation. At the heart of it was Tana, who had made his home at the top floor of the building where he could look out over the city.

"Looks like they moved you out of the triple-A sector and the megacity in general," Keah stated as a dozen bodies that used to be the regional board of directors wiggled in the cocoons that had them glued to their seats. "it's still a pretty big city."

"Yesss..." Tana hissed, the host merely nodding as he parasite spoke.

"Of course you're going to be considered patient zero," Keah continued to explain. "That means that all those that succumb to your infection will submit to your control. You are a true terror, a bioweapon with a mind of your own."

"You have your own part to play in this, you know," Tana replied as he looked at the helicopters that circled the area. "We're truly in this together for the long haul. We will continue to spread though, this means nothing to us."

As the two continued to look out through the partially covered window he suddenly heard something that had caused him to turn his head. These ten had been the last to be converted, the parasitic creature personally infecting them as he relished every second of it. The one that had been the head chair though started to twitch and convulse even more than the mere groaning of the other purple cocooned creatures. As he watched the one in curiosity he started to transform far faster than the others, his muscles thickening as the husky had started to turn into something else entirely.

The rubbery flesh of the creature's muzzle stretched as his muzzle shifted slightly, though the real changes were happening to his musculature and his feet. Tana saw the paw-like pads morph into something more rounded in nature with the already merged toes turning him into something more hoof-like in nature. The cock of the creature twitched and stiffened as he began to moan in pure lust, his body becoming more defined by the second as he almost immediately orgasmed. As his hips thrusted into the air once they became free the last of the changes happened to the once canine creature, a pair of impressive antlers sprouted from the skull of the creature as the purple parasitic flesh sprouted black and white fur.

The two closest to the new deer also began to morph into deer-like creatures, their mouths able to open though the flesh remained the same purple as the parasite cobra. "Ngggh, it's been so long since I've been able to properly possess someone," the one on the left of the deer said as real one stretched his limbs before he looked straight at Tana and Keah, the two perplexed as it looked like the middle one was the one speaking to him but it was the one on the right and left both started to talk in unison instead. "Look at you, all grown up and spreading your infestation to this entire building, I'm so proud."

"It's you..." Keah said in slight shock. While Tana had no idea who this creature was that used the other two infested creatures as puppets it appeared his parasite knew exactly who it was. "Olavar, Master Olavar."

"It's nice to meet you finally Keah," Olavar replied as he walked up and patted the cobra parasite on the cheek. Despite the need to spread Tana felt no desire to do so with this creature, in fact it was quite the opposite in that he should be serving him. "And this is your host Tana I see. I do apologize for not being there to personally ask you if you would like to be this parasite's first test subject, but I have to say that I'm rather impressed with the results."

Though Tana was still confused on what was going on he felt his chest swell with pride at the compliment, though he suspected that part of it was from the parasite that infested him. "It's such a pleasure to be praised by you Master Olavar," Keah said, this time Tana feeling his own mouth speaking the words even though they weren't his own. "Even though it wasn't the best of circumstances we managed to make it work. He is a good host and has fallen into the role quite willingly in order to get revenge on those who captured him."

"Oh, is that so?" Olavar said, all three sets of deer eyes looking at the two of them. "Tell me Tana, was this all just so that you could escape and get your vengeance on the people that did this to you, or is there something else that even Keah hasn't quite picked up on. A certain desire that you had been itching to fulfill, something that may have eased your transition into a host for the parasite that had been given to you."

"I... well..." Tana said as he found himself back in control of his faculties once more. "I have to admit that I have had a few pleasurable fantasies where I thought about myself becoming a monster like this. There've also been a few sim den sessions where I got to feel it, but I still found myself fighting it despite the pleasure I got since it was so..."

"Unnatural?" Olavar finished, which caused the infested creature to look down once more as it didn't help he heard it in stereo. "Despite your reservations the two of you appear to be doing just well, but sometimes it can help to get a closer look inside of someone's head to see how the bond between host and parasite get along. Fortunately Keah can help me see exactly what's going on."

Before Tana could say anything the deer walked over and touched him on the forehead, and as soon as he did the scene around him suddenly dissolved away. Both the deer and the cobra found themselves standing on a platform made of ethereal blue light, and as Olavar walked over towards Tana both could see that the blue-scaled creature was back to his normal body in the mental realm. But the signs of infestation were clear here as well since the limbs of the cobra had fleshy purple tendrils that throbbed and pulsated while they continued to coil upwards. It was a clear sign of the corruption that had bonded him to Keah, and as Olavar circled around the cobra he could see that several had started to push towards the tailhole of the bound creature and tickled around the base of his half-hard cock.

"It seems the bonding process is coming along nicely," Olavar stated as he reached down and gave Tana's maleness a squeeze which caused him to shiver. "I know that this wasn't where you were expecting to be but I can see that you're clearly enjoying yourself. Of course I can understand if perhaps this isn't the fate you wanted, in which case since I'm here now you can finally have the choice that I would have offered you before."

"A choice?" Tana asked, the haze of pleasure clearing as he realized that the deer spoke to him directly as his lithe, naked body hung there in the grips of the parasite.

"Yes, I can remove the parasite from you completely if you like," Olavar explained. "Keah would be transferred to one of the many new hosts that you have created for him and I will transport you back to the city where no one would realize you were involved. Or... if you are truly enjoying yourself then I can accelerate the bonding process between you and Keah, letting the parasite finally take total control of your body both mentally and physically."

Tana shivered at the offer and as he squirmed slightly in the bindings of the parasite that represented the hold on his mind he could see that Keah had only just begun to have taken him over. While he wasn't sure what a complete takeover would entail he had already gotten a taste of succumbing. This Olavar would be the only one that could untangle him, or he could bring the two together completely. It meant total infestation and loss of control, but he guessed that Olavar knew how much that enticed him from the smirk on the cervine's muzzle.

Even though Tana hadn't said anything he suddenly felt he tentacles on his body start to thicken and push further up onto his body. Olavar must have sensed his answer, the cobra thought to himself as his body shivered from all the new contact of the parasite on his mental self. This was it, Tana knew that soon he would be completely enveloped and that even his mind would be a mass of parasitic flesh. The thought caused him to practically tremble and as the deer started to slide his hands up and down what remained exposed of the cobra's body the tendrils quickly filled in the gaps.

"That's it," Olavar cooed as one of the tentacles began to push up into the serpentine creature that caused Tana to gasp. "Just let Keah take control, be a good host. Feel the pleasure from embracing the corruption that the parasite wants to feed you."

Tana let out a hiss of pleasure as his body became completely enveloped, the tentacles around his cock squeezed and slid over the sensitive flesh as more joined in until that was covered too. The same thing happened with his stretched tailhole and as it pushed inside of his mental body it represented the final infestation. When the cobra looked down he saw that the entirety of his form was nothing but a wiggling mass of fleshy purple tentacles that constricted around him. What little wiggle room he had disappeared as Olavar stepped in front of him and gently rubbed his hands around the neck where the tendrils weaved themselves into a collar.

Much to the surprise of the cobra that's as far as they went as Tana felt them squeeze his throat gently, expecting them to have slithered their way into his throat, nose, and ears just like it had when it taken him over physically. "Keah and I have agreed that you should still be you when it comes to the takeover," Olavar explained. "The parasite will be in control, but you will be there in order to enjoy it all."

The idea of being able to experience everything but completely helpless in the grasp of the parasite was almost as intoxicating as being taken over, especially when he could still feel the intense sexual pleasure that came from Keah's teasing of him. The tentacles that coiled around him seemed to constrict upon his acceptance of his new role in life. Just as he thought that he was about to orgasm right then and there Tana sudden found himself back in his heavily mutated parasite form. He also realized that Keah had already started to move with Olavar and the two parasite-ridden deer morphs that acted as his voice. With Keah in control there was nothing that Tana could do but engage in the depths of his newfound depravity while the lights and sirens continued to increase in intensity in response to the biological threat contained within...