Black Widow and Spider-Man accidentally unleash a sexy plague

Natasha Romanov, the Black Widow, hated when she felt like she was missing something and none of this was adding up. She only distantly registered Spider-Man's arrival as she watched the deadly Proxima Midnight throw herself at Johnny Storm like a newlywed on her honeymoon, her toxin spewing lance at her feet on an orbital platform. They'd had them dead to rights, so why was this happening?

Proxima Midnight was a general of Thanos, a deadly planner - not some simpering bimbo. It had to be a strategy, a tactic of some kind.

Quickly, she used her emergency comms to track down Tony Stark. He had privacy settings turned on but she never fully trusted anyone. She activated hidden cameras that she'd installed to get eyes on him and what she saw on the surveillance she'd installed made her eyebrows raise. Natasha was stunned to see him cavorting in bed with Silver Sable and Hellcat - both of them nearly nude and instigating what seemed to be a threesome, seemingly uninterested in the space invasion he'd been dealing with minutes earlier.

Superheroines acting atypically horny while Proxima Midnight herself was left grinding on Human Torch in public? The paranoia that kept her alive flared to life as the Black Widow quickly added up the information she had.

Proxima's lance had taken Captain Marvel out of play and someone had teleported Tony into the perfect honey trap, just before Proxima herself became a nympho. Proxima must have known she'd try to fly to space to burn it out of her system and that meant she was in orbit - perhaps as a patient zero to the same weapon Proxima used on the women in Tony's bed and dosed herself with. Widow grimaced as she came up with a disturbing theory.

"Hey, Widow! Sorry to miss all the action! Well, not the sort of action Johnny's-" Peter began as he dropped next to her, only for Widow to silence him with a raised finger.

"Not now. I think we're still technically under attack and this was all a diversion."

The other Avengers frowned and Spider-Man blinked under his mask but Widow didn't let him interject. Time was likely of the essence.

"I need to see if Carol's OK. I suspect she's unwittingly been made into a patient zero for some sort of potent aphrodisiac toxin or virus, one they knew she'd go into space to burn it out."

"OK, so? If she's burning it out, what's the harm?" Peter replied, cocking his head confusedly. "Unless- oh, no, are you saying whatever is happening is strong enough to affect even her? Man, I REALLY didn't have "Captain Marvel is turning into an insatiable bimbo" on my bingo card for today."

"Carol? Carol, respond now."

Natasha made an irritated noise as she radioed Carol, only to hear heavy breathing.

"Firstly, if she's in the atmosphere, that might be the crux of the plan. Get whatever it is airborne with her as a battery. Secondly, it is not just her. Use your eyes - I think Proxima Midnight dosed herself by accident. It also seems that Silver Sable and Hellcat were dosed as well. This was all likely a ploy and we're about to become ground zero for something nasty."

A chorus of confused and alarmed responses was drowned out by Jennifer Walter's voice.

"Why are WE OK then?" She-Hulk asked, puzzled. "Why not dose US if we're right here?"

"Not sure yet." she snapped before turning tapping her comms again. "Captain Marvel, come in! I need your status, now! How are you feeling?"

***

"Carol? Carol, respond now."

Up in the stratosphere, Carol Danvers couldn't muster the strength to respond at first. Those toxins were doing a number on her.

Then, quite suddenly, Captain Marvel felt herself going from deathly ill to suddenly and remarkably healthy, albeit weirdly warm. Good even. She let out a little giggle.

Her communicator buzzed and Natasha's voice barked along the line.

"Captain Marvel, come in! I need your status, now! How are you feeling?"

"Hearing you, like, loud and clear. I'm good. Weirdly great, even. Like, sooo good!" she replied with a dreamy giggle, then felt herself nipples hardening. Her pussy began to get hot as well so she knew it wasn't just the coldness of space. What the hell was the matter with her? She shook her head to try and get rid of the strange feelings. "But I'm also totally horny too! Wait, I didn't mean to say that! It just slipped out!"

She giggled again, involuntarily, squeezing her muscular thighs together to fruitlessly try and rid herself of the strange, sudden need between her legs.

"Like, why am I giggling? And getting turned on?"

Carol closed her eyes and began to take several deep breaths, trying to fight the strange sensations. In addition to euphoria and arousal, her outfit felt off. Was her bra getting tighter?

"I think my boobies are growi- breasts! I meant to say titti-- breasts! What the HELL is, like, happening to me?!?"

She heard Widow swear in Russian.

"Carol, listen - I need you to find a place to sequester yourself away from people, NOW! You may have just become patient zero for some sort of transformative aphrodisiac!"

The nearby Peter Parker heard this being shouted and added his own fateful contribution.

"Oh, no! I hate that you're right! NYC just became ground zero for some sort of bimbo bug! And it's already spreading over the entire atmosphere!"

Black Widow and She-Hulk exchanged a worried glance as Hawkeye yelled up at the ground to the Human Torch.

"Dammit, Torch, stop making out with her! This is a damn trap!"

The request was easier said than done as the blue skinned alien was wrapped around Johnny like an octopus, shoving her tongue down his throat and desperately trying to fuck him through their clothes.

Spidey, to his credit, acted quickly. He leapt into the air and swung up to completely web up her toxin spewing lance that was lying at the lovebirds' feet.

"OK, lance is taken care of, but maybe it's too late? Widow, Shulkie, how are you feeling?"

She-Hulk shrugged.

"I've always been, like, pretty sex positive and busty, so maybe ask me again in five minutes? Maybe my Hulkness is making me, like, immune? Y'know, unlike Evil Smurfette up there, who's totally trying to, like, hump the Torch through his clothes, she should be- should be- ummm-"

She stopped and blinked, staring up at the pair making out and spacing out, then licked her lips, her eyes going dreamy and slightly unfocused.

"Wow, I bet she's just going to, like, totally fuck him right there in front of everyone! That's so sex-" she stopped and shook her head angrily, her long green locks flying everywhere. "OK, shit, yeah, I'm, like, totally infected! Damn it, why can't I stop adding 'Like' to all my sentences! I'm a lawyer, not a damn bim- Ohhhhh!"

She-Hulk's already famously huge bust began to stretch out the front of her purple and white jumpsuit.

"Oh, shit, my boobs! Nggh! I should be, like, sooooo mad about this but I, ummmm-"

The green Amazon's sentence just trailed off in a giggle as she awkwardly tried to smash them down with her arms and then moaned at the sensation instead.

"I can only feel happy! Fuck I feel so good, so silly!" she slapped herself, trying to focus. "Nooo! Grr, oh, this, like, sucks! Gotta- gotta fight it!"

The addled Jennifer Walters grabbed at her expanding titflesh and tried fruitlessly to squeeze them back down to size, only to cry out with pleasure.

"OHHHHH, YEAH! Oh, FUCK! They're, like, waaaaay more sensitive now too! Mmm, I'm getting, like, SOOO horny- shit, gotta- gotta, like, STOP feeling up my big boobies! But it feels sooo nice"

A conflicted She-Hulk fell to her knees hard enough to crack pavement, her face wavering between mindless bliss and what should have been rage but looked like mild irritation instead. Distantly, Peter noticed her muscular green ass softening and expanding as well, turning the back of her outfit into a thong.

The two stunned men couldn't help but gape at the emerald Amazon's erotic transformation but Hawkeye quickly turned to Black Widow.

"Natasha, are you- oh, shit! Nat!"

Natasha had taken a seat on the dock, eyes closed in meditation, her breathing steady . . . but the thick nipples and increasing bust distending the front of her black catsuit, forcing her zipper to open to expose more and more titflesh was a dead giveaway. Her lips also seemed to be getting fuller and taking on a bright pink sheen.

"Listen to me. I'm using my Red Room training to- nggh! - stay focused." she panted, her voice starting to take on more of a Russian accent as she felt herself becoming euphoric and horny. "Won't work for long. Need you to get all the big brains here, now. Like, sequester the women, best you can. Getting hard to think. Body feels so- so good. Clint, Spider-Man, don't you DARE let me fuck anyone with my bigger, sluttier new titties-"

Her mouth snapped shut and she gritted her teeth, then snarled "NOW!" before shooting herself in the neck with her own Widow's Bite and collapsing to the ground in a limp heap.

Peter's eyes widened underneath his mask as he watched the transformation continue despite the shapely redhead's unconsciousness. Her short red hair was growing longer and her tits just continued to swell and swell, like bread baking in fast forward. Her jumpsuit was already unzipping itself down to her navel as her perky C-cups expanded like inflating balloons to the size of basketballs. Blushing, Pete shot out some webbing to try and preserve her modesty, only for her jumpsuit to squeak with the strain around her expanding tits and ass.

Hawkeye got on the comms immediately and started radioing he could everyone about the situation, which left Peter alone as he turned around to face a very horny and very confused She-Hulk. Jennifer's already impressive tits were now bigger than her head and she helplessly squeezing them and pulling at nipples the size of her thumbs. He could see that she was also biting one of her lips hard enough to draw blood, in attempt to control herself . . . only for said lips to become fuller and sexier and bright pink.

"Gotta- like- noooo, my lips feel GOOD too now, oh fuck! Fuck! AHH! I'm, like, CUMMING! FUUUUUUUUCK!"

Distantly, Peter's camera, webbed up near a building took an automatic picture of the seven foot green goddess making herself orgasm from just titplay and biting her suddenly poutier lips. As if in response, her tit growth surged again, almost doubling in size, starting to burst out the sides of her costume.

"Ohhhh, boy!" Peter exclaimed as he stared at the shocking display and gulping. He could only think of one thing to say. "I'm gonna need a LOT more web fluid!"