* As if being a sea serpent big enough to encircle the ''world'' wasn't scary enough, Jormunqand the Midgard Serpent of 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 NorseMythology.
* OlderThanDirt: In 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).
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