* As if being a sea serpent big enough to encircle the ''world'' wasn't scary enough, Jormunqand the Midgard Serpent of Myth/NorseMythology also has poisonous breath. In the FinalBattle of Ragnarok, Thor breathes in too much of Jormunqand's breath while [[DropTheHammer beating it to death with Mjolnir]]. He's {{Badass}} enough to try and keep going, but only manages to take nine steps before finally dying.
* The Dragon of ''Literature/{{Beowulf}}'' is [[OurDragonsAreDifferent the fairly standard]] fire-breathing, treasure-hoarding, cave-dwelling kind. It probably eats people, too, but we never see it.
* Add to the list the dragon Fafnir, of the ''Literature/VolsungaSaga'', also from Myth/NorseMythology.
* OlderThanDirt: In Myth/EgyptianMythology the sacred uraei and serpents of the Duat breathe fire to protect the king and gods.
* The Nuckelavee of Scottish mythology had diseased breath, which blighted plants and made humans and animals ill.
* According to [[Literature/TheBible the Book]] [[Literature/BookOfRevelation of Revelation]], when [[KungFuJesus Jesus]] [[SecondComing returns]] during [[TheEndOfTheWorldAsWeKnowIt the end times]] he will be able to breath ''swords''... apparently [[MixAndMatchWeapon intercontinental ballistic swords]]... [[MindScrew or something]]
--> '''Revelation 19:15''' "And out of his mouth goes forth a sharp sword, that with it he should smite the nations..."
* A common version of the mythological beast catoblepas describes it as having poisonous breath (one description of the poisonous exhalation, curiously, matches the properties of the now-well known toxic gas phosgene).
* One of the Fomorians, the legendary race who ruled Ireland before the coming of humans, is said to have had a terrible eye that turned people to frozen ice, and breath that touched everything with the blight of deep winter snow and frost. Creator/MichaelMoorcock wrote the second Corum trilogy as a thinly-velied Expy of Irish myth where the "Fhoi Myore" rule the land.
* The [[http://cryptidz.wikia.com/wiki/Tripodero tripodero]], [[FearsomeCrittersOfAmericanFolklore a humorous cryptid]], spits wads of mud at birds and small mammals to bring them down.
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