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Infectious

Whatever change happened to you can also be spread to the people you have physical or sexual contact with. Often happens through transmission of semen (specifically, something along the lines of “my cum makes you grow”) or sweat, but can involve methods as innocuous as kissing, or smelling the subject’s potent musk.

Kinds of “Infectious” stories include:

    Other tags that also fall under the category “Partner-Related Changes”: Absorption, Body Swap, Hyper Pheromones, Merging, Shared Body.

    Stories found: 71.

    Something missing? We’re always looking to improve the way our stories are tagged. If you know of a story that should be added to this page, please go to the story page and use the tag suggestion feature—the link is directly under the list of tags.

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    Complete story list for Infectious:

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    • Field agent by BRK  Btaur Cent CGrow 4Legs Cock Infect XArm XCock XLeg XLimb MGrow Grow  Special agents Adkins and Barber interview a rancher in relation to their current case. There’s something odd about the handsome Latino, though—starting with the fact that he won’t get down off his horse.  Added Apr 2020  •  2.7K words
      2,318 views
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    • Geno-type by Ziel(34 parts)CGrow Cock HyCock Infect  While on a camping trip, Tyler makes a half-assed wish on a shooting star. Not only does he get his wish, but it begins to affect those around him as well. Maybe he should have been more specific? An ongoing saga of hyper growth and the weird social situations it results in.  Added Dec 2012  •  Updated Feb 2016  •  144.3K words
      87,956 views
    • The good freak by Also Known As(33 parts)Hard CGrow Taller Grad Balls Cock Cum Infect MGrow Musc Grow  Kevin Peters is a cheerful, very fit young man who happens to be getting bigger and hotter in every way, much to the bemusement (and secret arousal) of his doctor. Soon the guys around him are growing too, and Dr. Donaldson discovers even he’s not immune...  Added Nov 2002  •  33.5K words
      32,915 views
    • The greenhouse effect by Godzilla  CGrow Balls Cock Infect Plants    Added Mar 2006  •  Updated Feb 2006  •  2.4K words
      19,060 views
    • Growing pains by Anonymous(4 parts)CGrow Infect MGrow Musc    Added Jul 2002  •  4.7K words
      19,128 views
    • Gym maniac over his head by MuscularEmperor  CGrow Viol Cock HyCock HMusc Infect MGrow Musc Nonc Rape Grow  Alexander discovers that the sweat and sperm of bodybuilders affects his own body, which begins a dangerous and destructive obsession.  Added Jan 2020  •  3.3K words
      6,768 views
    • Gym parasite by Aphon  CGrow Balls Cock HyCock Infect Nonc 2Gay  When a failed experimental piece of parasite goop finds itself in a gym, it must spread itself quickly or die. Its means of transmission has some huge side effects, whether you like it or not…  Added Dec 2019  •  1.7K words
      8,211 views
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    • Huge changes: Book two by RdyRoger(2 parts)CGrow Hair Balls Cock Infect MGrow Musc Nonc PSD Grow Series  Jason and Todd decide to help Mason, not suspecting that Mason will get an extra helping of wishes, or that Mason’s fantasies of love and growth will start affecting more than just his partners.  Added Dec 2017  •  9.9K words
      12,442 views
    • Hulk hunter by JayPat(2 parts)CGrow Viol Giant Cock HyCock Infect XAbs MGrow Musc Nonc Grow Tf Series  Hunter has dedicated his life to tracking and neutralizing the hundreds of huge-growing hulks that have been terrorizing small towns for twenty years now, and he’s damn good at what he does. But when he gets to his latest sighting, he finds things aren’t going the way they usually do.  Added Sep 2018  •  11.1K words
      10,617 views
    • The hulk pill by JayPat(5 parts)Cock Infect MGrow Musc Nano Grow  The only thing weirder than your buddy Boz offering you a “hulk pill” would be for it to actually work.  Added Oct 2012  •  29.5K words
      64,665 views
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    • Jake: hand-drawn giant by spacevlad(7 parts)Infect Gut Musc Grow  Drawing massive, muscle-hunk football stars seems like a safe enough hobby—but what if your drawing takes on a life of its own?  Added Sep 2009  •  11.8K words
      25,969 views
    • The journal by Braun1(11 parts)CGrow Hair Balls Cock Infect MGrow Musc Grow  An ordinary college guy finds himself changing after a steamy encounter with a hunk named Brad, and decides to start documenting everything that’s happening to him.  Added Mar 2003  •  Updated Feb 2003  •  30.5K words
      16,563 views
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    • Porn can be healthy by Egi(2 parts)CGrow Cock HyCock Cum Infect  Zack is a healthy, horny young man who, like any other boy, likes to look at porn. Always one for novelty, Zack comes across the perfect website for him and his needs!  Added May 2017  •  8.7K words
      19,556 views
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    • Quarantined by MuscleNexus  Infect MGrow Musc Nonc  Devon is excited to hear his lover is returning from his overseas deployment early, after escaping the outbreak of a strange virus that put the rest of his team in quarantine. Only, Scott doesn’t seem to be quite himself…  Added Aug 2018  •  1.9K words
      6,461 views
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    • Transform by Also Known As(35 parts)CGrow Fly Cock Pher Infect XCock MGrow Musc Series  Containing a secret is a hard thing to do. And the bigger the secret is, the harder it is to keep. No one was finding the truth of this more than those few men in charge at the Institute for Genetic Enhancement where the way has been found to transcend ordinary masculinity. The sequel to SupermenAdded Oct 2002  •  Updated Sep 2018  •  131.9K words
      39,810 views