Poison Gas

Poison Gas is a recurring enemy ability in the series. It is often a moderately powerful Poison-elemental attack that targets the entire party and inflicts the Poison status. There also exists a more potent version sometimes, called Poison Breath, which deals much more damage than Poison Gas in the games that it appears in.

Final Fantasy
Poison Gas is an enemy ability used by the enemies Scarmiglione, Poison Naga, (Dawn of Souls and 20th Anniversary versions only), Tiamat, Green Dragon and Chronodia (in the 20th Anniversary version). It inflicts moderate to major non-elemental damage to the party as well as Poison.

Final Fantasy II
Poison Gas is an enemy ability used by Tiamat, Green Dragon, and Iron Giant. It deals non-elemental damage and Poison to the party.

Final Fantasy IV
Poison Gas, originally called Poison in the SNES version, is an enemy ability used by Dr. Lugae, Geryon, Scarmiglione, and Lunar Dragon. It inflicts minor non-elemental damage and Poison to the entire party.

Final Fantasy V
Poison Breath is an enemy ability used by various enemies in the game, including Bahamut and Archeosaur. It inflicts major non-elemental damage to the party as well as inflicting Poison.

Final Fantasy VII
Poison Breath is an enemy ability that inflicts Poison on the entire party. It is used by CMD.Grand Horn and Bagnadrana. The weaker variant Poison Storm inflicts Poison on one party member, and is used by the Harpy, while Poison Blow, used by Velcher Task, does the same thing. Bio Gas, used by Helletic Hojo, inflicts Poison and moderate non-elemental damage to one character.

Final Fantasy VIII
Poison Gas is an enemy ability used by only Tri-Face, and it inflicts high non-elemental damage as well as Poison and Confuse to one party member. It is often used when Tri-Face is at higher levels. The weaker variant Poison Mist, used only by Anacondaur when it has 50% or less max HP, inflicts Poison and non-elemental damage to the party, though the damage is negligible.

Final Fantasy X
Poison Breath is an enemy ability used by Evrae, which deals Poison and moderate non-elemental damage to the entire party. The weaker Poison Mist inflicts Poison and Confuse, as well as minor non-elemental damage, to the entire party, and is used by Spirit.

Final Fantasy X-2
Poison Smog is an enemy ability used by Taromaiti, which inflicts minor non-elemental damage to the party, as well as Poison and Blind.

Final Fantasy XII
Poison Breath is an enemy ability used only by Aeronite and Dheed. It inflicts area-based damage as well as Poison to those in the area.

Final Fantasy Mystic Quest
Poisonbreath is an enemy ability used by Dualhead Hydra and Twinhead Wyvern. It inflicts non-elemental damage and Poison to both characters.