History Main / AllergicToEvil

* Allen Walker of ''Manga/DGrayMan'' can tell humans from demons using his cursed left eye. But the once-human souls of the demons are not pretty to look at. "The world he sees is hell," as one of his comrades comments. [[spoiler:The souls of level 4 demons are so corrupted they can't even be shown in the manga, and the mere sight makes Allen puke]].

* Variation in ''LightNovel/ACertainMagicalIndex'', Touma has the power to dispel anything related to magic or God (which seem to be interconnected). While he's not inherently bad, [[spoiler:his name seems to come from Toma the Unbeliever ([[MeaningfulName which makes sense with his power]]) and he's implied to be able to cancel out God.]] One of the nasty side effects for him is that [[HealingHands healing magic]] can't work while he's in the target's proximity, and obviously, not on him either.

* ''Anime/SakuraWarsTV'': When she senses the coming of Crimson Miroku in episode 5, [[PsychicPowers Iris]] comes down with a high fever and ends up screaming in agony when Crimson fully emerges.

* In keeping with his KryptoniteFactor of pollution, WesternAnimation/{{Captain Planet|and the Planeteers}} is hurt by UsefulNotes/AdolfHitler's hate, which is Heart-based pollution.

* ''Series/StarTrekTheNextGeneration'': In the episode "The Battle", Picard starts having headaches when the Enterprise rendezvous with a Ferengi ship who are "gifting" him his old (and thought lost) ship, the U.S.S. Stargazer. The Ferengi captian is secretly the father of the ship captian that Picard defeated with the Stargazer in the "Battle of Maxia". He has a spooky glowing orb of doom. You can see where this is going...

* The atmosphere of Dark Aether in ''VideoGame/MetroidPrime2Echoes'' is damaging to anything not from that realm. As such, Samus takes constant damage in Dark Aether when not within the field of a light crystal. This being ''VideoGame/{{Metroid}}'', she eventually gets upgraded suits that massively decrease and eventually outright negate the effect.

* ''Series/JessicaJones2015'': The character Erik Gerben from Season 3 has this ability. [[{{Irony}} He uses it to Blackmail people.]] Apparently, his Evilness Sensor doesn't apply to himself. When he's around ''really'' evil people, he starts getting {{Psychic Nosebleed}}s.

--> '''[[TheSociopath Sallinger]]:''' Why do I do this to you? Hmm?
--> '''Erik:''' Because I feel your sick, evil ''[[LackOfEmpathy void]]'', your hole of black SHIT! You're ''barely human!''

[[folder:Tabletop Game]]

* In ''WebAnimation/{{Underverse}}'', Dream, the guardian of positivity can only use his powers in a happy environment, and can only teleport to places with positive emotions.

* In ''Anime/YuGiOhZEXAL'' Astral is unable to handle high amounts of chaos (A energy force that Barians primarily use in a negative way) and often collapses in debilitating pain. He usually hides away to combat these effects for days on end within Yuma's key.

* In ``Anime/{{YU-GI-OH! ZEXAL}}`` Astral is unable to handle high amounts of chaos (A energy force that Barians primarily use in a negative way) and often collapses in debilitating pain. He usually hides away to combat these effects for days on end within Yuma's key.

* In ``Anime/{{YU-GI-OH! ZEXAL]]`` Astral is unable to handle high amounts of chaos (A energy force that Barians primarily use in a negative way) and often collapses in debilitating pain. He usually hides away to combat these effects for days on end within Yuma's key.

* In ''Anime/{{YU-GI-OH! ZEXAL]]`` Astral is unable to handle high amounts of chaos (A energy force that Barians primarily use in a negative way) and often collapses in debilitating pain. He usually hides away to combat these effects for days on end within Yuma's key.

* ''Manga/{{Akumetsu}}'' has Mary Kirishima aka 'Bloody Mary', a police officer who gets nose bleeds everytime she is around those who are evil.
* Allen Walker of ''Manga/DGrayMan'' can tell humans from demons using his cursed left eye. But the once-human souls of the demons are not pretty to look at. "The world he sees is hell," as one of his comrades comments. [[spoiler:The souls of level 4 demons are so corrupted they can't even be shown in the manga, and the mere sight makes Allen puke]].

* Variation in ''LightNovel/ACertainMagicalIndex'', Touma has the power to dispel anything related to magic or God (which seem to be interconnected). While he's not inherently bad, [[spoiler:his name seems to come from Toma the Unbeliever ([[MeaningfulName which makes sense with his power]]) and he's implied to be able to cancel out God.]] One of the nasty side effects for him is that [[HealingHands healing magic]] can't work while he's in the target's proximity, and obviously, not on him either.
* ''Anime/SakuraWarsTV'': When she senses the coming of Crimson Miroku in episode 5, [[PsychicPowers Iris]] comes down with a high fever and ends up screaming in agony when Crimson fully emerges.

* Linden Avery in the second ''[[Literature/TheChroniclesOfThomasCovenant Thomas Covenant]]'' trilogy has the ability to sense health or disease in living things. [[BlessedWithSuck She then finds herself in a world ravaged by a supernatural curse, in which]] ''[[BlessedWithSuck every living thing]]'' [[BlessedWithSuck is diseased.]]
* In Creator/DavidEddings' ''Literature/{{Malloreon}}'', C'nedra is taken over by Zandramas. Symptoms include hallucinations, depressive episodes, and lethargy. It takes Polgara a surprisingly long time to figure out what's going on.
* In ''Literature/TheLordOfTheRings'', the [[ArtifactOfDoom One Ring]] has this effect on its bearer, weakening their resistance to it and eventually possessing them. Also happens in the presence of Nazgûl, due to the effect of the Black Breath ([[AcheyScars or if they happen to have stabbed you with one of their Morgul blades]]).
* Angels in ''Literature/ILucifer'' suffer from crippling agony known as "Angelic Pain". It literally hurts them to commit evil acts and corrupts their very essence. As you can imagine Lucifer's suffering is immense and ''technically'' [[SelfInflictedHell self-inflicted]].
* In the ''Literature/VampireAcademy'' series, Rose has the ability to sense when Strigoi (a.k.a. the undead) are nearby (this is one of the effects of being "shadow-kissed", or having returned from the dead). While this ability proves useful in terms of self-defense, it manifests itself as severe nausea whenever Strigoi are in the area, which is extremely unpleasant and inconvenient, particularly when she's trying to actually fight the super-strong, super-fast, undead vampires.

* ''Literature/TheHeirsOfAlexandria'' series has "witch smellers", who literally smell dark magic. And sneeze, if it's powerful enough. Detecting useful details takes practice and training, though.
* In ''Literature/StarDarlings'', negative energy is toxic to Starlings and Starland as a whole.

* ''Series/StarTrekTheNextGeneration'': In the episode "The Battle", Picard starts having headaches when the Enterprise rendezvous with a Ferengi ship who are "gifting" him his old (and thought lost) ship, the U.S.S. Stargazer. The Ferengi captian is secretly the father of the ship captian that Picard defeated with the Stargazer in the "Battle of Maxia". He has a spooky glowing orb of doom. You can see where this is going...

* ''Series/BabylonFive'': Both Delenn and Talia Winters have strong negative reactions to the presence of the Shadows accompanying Morden.

* In ''TabletopGame/PrincessTheHopeful'', [[MagicalGirl Princesses]] have the BlessedWithSuck variant in a form of enhanced empathy called Sensitivity, which causes them to feel hurt whenever they witness someone KickTheDog in a truly cruel manner. At best, they only get a small headache; at worst, it can result in physical injuries, depression, denial or rage, and inflict "shadows" which disturb their ability to transform. The pain can only be tempered by trying to right the wrong, [[ChronicHeroSyndrome which is a primary reason Princesses tend to be inclined toward doing good]].

* In ''VideoGame/{{Okami}}'', Ammy takes damage and loses ink when she's in cursed areas (and ridiculously fast, too, so you can't skirt into said zones for SequenceBreaking).

* In ''VideoGame/{{Xenosaga}}'', certain people are capable of contacting U-Do, the mysterious existence which hangs as a boogeyman over most of the game. This contact causes their consciousness to break down with fear, leading to fainting spells and eventually a coma and death. Shion's mother Aoi was hospitalized with this "illness." When Shion starts getting the same fainting spells, she [[DefinitelyJustACold insists it's just fatigue.]]
* In ''VideoGame/ShadowsOfTheDamned'', staying in hell's darkness for too long is damaging.

* Monsters in ''VideoGame/{{Undertale}}'' are a variation of this trope. Due to how their physical bodies are linked to their souls, being attacked by a creature with cruel intentions will hurt them more. [[spoiler:This is the in-universe reason you LV up as you kill monsters. The more you kill, the crueler you become]]

* ''VideoGame/LaPucelle'': As the Dark Prince comes closer to awakening, Alouette begins feeling ill and even dreaming of her death. [[spoiler: When Croix ends up awakening as the Dark Prince, Alouette nearly faints from the pain, and ends up being sidelined for a while to gather her strength.]]

* In the first edition of ''TabletopGame/DungeonsAndDragons'' a high level evil cleric could actually turn a paladin that was of lower level.
* In the AD&D 2nd edition Monstrous Manual's entry on the heucuva, it's mentioned that the lair of this undead creature is decorated as a grotesque mockery of an abbey or temple, with corpses posed to represent worshipers. It's a hideous, abhorrent sight that can drive a good-aligned cleric into a destructive frenzy.

* WesternAnimation/DannyPhantom has "ghost sense" - whenever he's near a ghost, in human or ghost form, his breath gets cold and comes out blue. Only happens when he's not aware of the ghost, though.

* In ''Fanfic/NeonGenesisEvangelionGenocide'' Asuka is unbeknownst to herself exposed to [[spoiler:the Emerald Tablet, a powerful, but ultimately [[AIIsACrapshoot malevolent]] artificial intelligence]], installed in her Evangelion as an experiment to enhance its performance. The exposure has an adverse effect on Asuka both physically and mentality, as [[spoiler:the Emerald Tablet tries to wear her down, so it can exert [[ArtifactDomination mind control]] her through her mental connection to the Eva]], but she doesn't notice it until it is pretty too late because she at first dismisses it as [[AllPeriodsArePMS symptoms associated with her period]].

* In ''TabletopGame/PrincessTheHopeful'', [[MagicalGirl Princesses]] have the BlessedWithSuck variant in a form of enhanced empathy called Sensitivity, which causes them to feel hurt whenever they witness someone KickTheDog in a truly cruel manner. At best, they only get a small headache; at worst, it can result in physical injuries, depression, denial or rage, and inflict "shadows" which disturb their ability to transform.

* One of Duncan's immortal friends from the ''Series/{{Highlander}}'' tv series would sneeze and have cold symptoms whenever another immortal was near. It was ''definitely'' not useful to him, (and he repeatedly cursed it) since all immortals can feel the presence of each other anyway when they get close enough.

* In the first edition of ''TabletopGame/DungeonsAndDragons'' a high level evil cleric can turn a paladin that was of lower level.

* In ''Series/{{Charmed}}'' one cupid gets hurt every time the demon of hate unmakes a relationship he put together.

** This is also the cause of Arwen's problems toward the end of the third book/film.

* In ''WesternAnimation/{{Trollz}}' the school principal is allergic to goldenrod and beasts from the realm of darkness, so when Snarf is nearby he breaks out in sneezes.