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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.

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

Stories found: 51.

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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  • 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(24)
    76,701 views
  • The greenhouse effect by Godzilla  CGrow Balls Cock Infect    Added Feb 2006  •  2.4K words(2)
    16,246 views
  • Growing pains by Anonymous(4 parts)CGrow Infect Musc MGrow    Added Jul 2002  •  4.7K words(4)
    15,130 views
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  • Huge changes: Book two by RdyRoger(2 parts)CGrow Hair Balls Cock Infect Musc MGrow 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(6)
    7,724 views
  • Hulk hunter by JayPat(2 parts)CGrow Giant Cock HyCock Infect XAbs Musc MGrow Nonc Grow Tf Viol 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(5)
    4,233 views
  • The hulk pill by JayPat(5 parts)Cock Infect Musc MGrow 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(15)
    51,561 views
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  • In the sack by Neltharion5  Cock Infect Musc MGrow  Brian finds a magical backpack that uses magazines as fuel to transform him. Soon, he realizes that his enhancements are sexually contagious, making his sex partners hotter. What else will he discover about the magic sack?  Added Mar 2017  •  3.5K words(4)
    6,958 views
  • It’s magic by TylerGermany(2 parts)Infect Tf    Added Apr 2014  •  2.1K words()
    7,913 views
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  • Jake: hand-drawn giant by spacevlad(7 parts)Infect Musc Gut 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(4)
    21,452 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(23)
    12,761 views
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  • Quarantined by MuscleNexus  Infect Musc MGrow 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(11)
    3,566 views
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  • Sam and Bolt by Alakazam1988(11 parts)CGrow CumInf Dad Hair Taller Balls Cock HyCock Cum Infect NipC NipCum Self Grow  Sam’s father, Bolt, shares with his size-hungry son the secrets of becoming truly huge.  Added Sep 2016  •  Updated Dec 2016  •  48.2K words(40)
    35,724 views
  • Santa’s big surprise by Silverfox Dad(3 parts)Xmas Infect Musc MGrow Grow Series  Jeremy has not only been obsessed with Santa, he's seen him and knows he's real. So when a friend at the gym gives him a muscle-growth supplement meant to give him confidence enough to talk to his beautiful bodybuilder crush Marco, Jeremy decides instead to give Santa a gift of his own.  Added Jan 2017  •  7.6K words(9)
    6,454 views
  • Side effects 2000 by Braun1 and Z(31 parts)PermaBoner CGrow Cock HyCock Infect Musc MGrow Self Grow  Mike and Jan begin an odyssey of muscle, growth, transformation, sex, and love.  Added Jul 2002  •  Updated Sep 2018  •  126.7K words(4)
    18,358 views
  • Support line by BRK(3 parts)PermaBoner CGrow Cock HyCock Infect XArm XCock XLimb Rep  Customers interacting with the reps at the Metabods Support Line tend not to get the service they’re expecting—though it is always above and beyond.  Added Feb 2012  •  Updated Nov 2013  •  7.5K words(4)
    20,251 views
  • Sweat it out by Egi(2 parts)CGrow Cock Infect Musc MGrow  Working out is hard enough when you're scrawny and shy. Sometimes you need a partner to help fill you out with some unconventional methods.  Added Jun 2017  •  8.2K words(9)
    6,830 views
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  • Unbound Beast Inc. by an0n12  Cock Infect Musc MGrow  Jeff is working out late at night and encounters Ian who has substantially grown since he last saw him; Ian decides to be cocky and show off/seduce Jeff not taking into account the how effective the drug he's taking would be when he cums. Will it be too much for Ian or will he let his arrogance and lust get the better of him?  Added Mar 2017  •  4.0K words(13)
    7,182 views
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  • Visiting home by Wicked(2 parts)Dad Cock Infect Musc MGrow Grow  Asher spent his entire first semester working out and gaining some serious muscle, but when he returns home for winter break, he doesn’t realize that he’ll be the one amazed by how much someone can change.  Added Jan 2016  •  Updated May 2016  •  6.8K words(12)
    19,965 views
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