Being Spiderman is like having a 10.000 level alternative skin, Peter did instantly immune to any type of diseases, be able to heal from all injuries, he likely had no weakness. 

_ You really don't have weakness or allergy ? Not even phobia ?

Bruce slowly sips his coffee, looking at Peter working on Bubba's system. 

_ Yeah I guess. Ever since I got bitten, my vision healed, scars disappeared, strength enhanced, 100 times more effective senses, and never had a cold or fever. 

Peter shrugs then takes off his goggles. 

_ Should I let that spider bite me ?

Tony walks over to grab the spanner.

_ The spider that bit Peter was a venomous one. You'd suffer from palpitations, nausea, vomiting, headaches, difficulty breathing, abdominal pains. Its venom actually contains the enzyme that breaks down the cells of the human body, or in a simpler way, you die, in 30 minutes. 

Bruce naturally provides Tony with his clarification, like he always does. 

_ So the young bug rarely survived ?

_ Spiders are arachnid, Mr.Stark. 

_ Urg !!! Biologists.

Tony whimpers and walks out of the conversation. He has better things to do than joining nerds' chitchat. 

_ Have you ever tried to figure out ? Find the things that effects your immune system and cure it. 

Bruce curiously asks. 

_ Come on, common sense guy. The kid is a spider, so? Bug spray !!!!!

Tony yelps through the room, which makes the other two wail exhaustedly. 

________

_ Hi guys. 

Peter jumps out from the elevator to see a pretty much daily life of Earth's extraordinary heroes. Rhodey is making green juice for Tony; Nat and Sam are playing Mario Cart; Loki ( which he stays at the Tower every weekends 'cause so does Peter ) is having a small talk with Wanda about their magic; Bucky is cooking and Steve is preparing the cutlery. Everyone has awared of their favorite boy's presence and gives him a soft welcome. 

_ Hi lab-head, just woke up ?

Natasha throws her control away and goes to Peter's side, leaving Sam on his solo ride. 

_ Woke up from the longest equation ever !!

She grins sweetly to the boy's whining voice in her arms. She has enough time to stroke his brown curls then Bucky yells out. 

_ Lunch is ready. 

_ Mr.Stark said he's on his way. 

Bucky makes seriously spectacular braised ribs, which a bit much for lunch but no one complains. Everything was nice and hearty, until Clint decided to flick mashed potato aiming at Peter. Now the question is, how can you simulate a normal human being when you have six sense, and do not want to shower again ? Pretend to drop your cutlery and duck !!! Causing it to hit the person next to you. 

_ BARTON YOU A-HOLE !!!!! 

 Natasha clenches her voice and throws her finished plate which only sauce left, right at the starter's face. Luckily, they're mostly done with their meal, so, Food War begins !!

_ Every freaking time !!!!! How can you dodge perfectly every single time !????

Clint jerks off his arms fulled of mashed potato and gravy. He had tried to scare and surprise Peter for like.. everytime the kid's in the Tower, but he never flinched and even be able to coincidently dodged it !! There's one time when Clint was planning to jump and tackle the skinny boy to the ground, the kid just accidentally sat down to tie his shoelace, causing the man to trip and hit his head, hard, at the wall. 

_ Parker's luck, works everytime, like magic.

Peter bursts out laughing at the spotted adults. Wanda protects him and herself with her magic shield so they are the only one who are clean. Well there's one more, Peter looks at the black kitten sitting on his shoulder. Loki has calmly turned into a small cat to avoid the brutal war, clever right ?

_ I never miss Petite Four, just you wait and see. 

His determination only makes Peter to stick out his tongue, teasing the older guy. 

_ That's it Birdbrain, you're on cleaning duty today. And I want everything to be shiny. Nat will watching you. 

Tony annoyingly groans. He will kill that idiot one day, or likely, today, right now. 

________

The evening goes out great, Clint's working hard to clean the area with the help of Steve, and Nat on a side holding a hunting gun, don't ask how she got it. Peter runs down to get the navigation device he forgot earlier but a scream happens to distract him. 

_ Shieettt !! SHIEEETTTTTTTT !!!!

_ LANGUAGE !!!

Steve screams back while trying to look for the noisy one. He then sees Sam race out of the bathroom with a tower in his hand flapping everywhere. It seems like he has a companion. 

_ NOO NOOOOO !!! AAAHHHH !! GET IT OFF ME !!!

It's Wanda's turn to freak out because of the undefined flying object. She yells out and jumps crazily, even uses a bit of her power to get that thing off her hair. 

_ THAT SHIEET CAN FLY !!!!

_ A cockroach can fly ?

_ IT FLIES !!!!!

_ It flies ??

_ SHUT UP AND GET RID OFF IT !!! 

A catastrophe happens. Clint's chasing the cockroach with his broom; Wanda's shielding herself in the corner; Steve rolls up his newspaper to smash it; Peter's standing behind the kitchen counter, watching Natasha's trying to aim that disgusting creature with her gun. 

_ HOLD YOUR GUN ROMANOFF !!!!!! OUR SAVIOR IS HERE !!!! 

Sam squeals loudly with a bug spray in his hand, following a freaking flying cockroach. When it finally stops, Sam makes sure to give it all he had, an entire bug spray wasted. 

_ Hmph, ethanol.

Peter looks at the dead cockroach in front of him, takes a strong sniff then thinking for a bit. 

_ Ah hah, ethyl chloride !!! 

His instinct makes him run his finger on the counter, AND literally tastes the chemical. It wasn't 2 seconds later, he faints immediately. 

_ PETER !!!

Wanda rushes over to hold the boy up, but he's completely unconscious. Everyone else worriedly surround him with confusion. 

_ Friday, call Bruce now, tell him go to the Com's ER asap. 

Natasha promptly says and signals for Steve to carry Peter. They all rush to the ER with a heavy heart. 

_ What happened ?!! He fainted ??

Bruce races to the ER with Tony, after hearing Friday informed, then goes straight to where Peter is laying and checks his condition. 

_ He licked the bug spray thing and swooned almost immediately. 

Steve scowls concerningly at the two. His expression agonizes Tony even more. That kid never ever faints, at least on his watch. Is it really because of the bug spray ? He just said it for fun and it's seriously gonna kill him ?

After 20 minutes of torturous silent, Bruce exits the room with a uneasy look. 

_ He is not in danger anymore but I'm not sure. I'll keep an eye on him. 

Most of them are relieved but Tony's still on the edge.

_ What exactly happened to him ?

_ It seems like he's 'allergic' to ethyl chloride. His body cells reacts to it for the very first time so it's extremely risky now. Not only normal allergy reactions, but he might also suffer from having a fever, vomitting,.. His immune system is tremendously weak in front of the allergy. I guess it's quite lucky that it happened here, so that we can prevent it likely immediately. If it happened out there, I'm afraid that he would not make it. 

_ Enough amount can kill him ?

_ Most likely. I will work on a cure for him, it might still have some reactions but would avoid killing him. 

Bruce massages Tony's shoulder to ease his worry a bit. 

_ He'll be fine, I will look after him. 

_________

It was an hour later for Peter to gain back his consciousness. He groans, didn't know what just happen. All he ever feels, is a 1000 pounds rock staying on top of him thus ever inch of his skin is burning like thousands of ants crawling and biting him. He panicly gasp for air, making his vital signs jumps disorderly. 

_ Pete !! PETE !! STAY.CALM !! You have to calm down !! 

Bruce zooms to open the consolidation area and tries to soothe the kid down. He doesn't want his body encouter any shock. Tony too, rushes in beside him. 

_ Kid ! Pete !! Hey, hey, can you hear me ? Breathe kid, breathe. 

Tony attemps to not touch Peter, his skin is tumid badly so it would hurt him even more. Luckily, he has calmed down but his tear is slowly shedding due to the pain. 

_ You hear me ? You'll be fine, got it ?

Peter heavily nods at Tony's words. He then falls asleep again. 

_ Oh man, this is really bad. His immune system is utterly ineffective right now. If that small amount of ethyl chloride did this to him, that thing could seriously kill him. 

Bruce takes off his glass and starts massaging his forehead. He's been working on Peter's cure but it's worsen than he thought.

_ You go and work on your cure thingy, I'll keep an eye on him. Tell me what to do. 

End chap. 

TBC