The smell of explosive swamp gas fills the air.
Explosive gas

a bog full of explosive gas

Bogs slowly release olive green explosive gas. If the gas comes in contact with a flame source, it explodes, inflicting direct damage and burning on creatures caught in the explosion.
Caustic gas · Paralytic Gas · Confusion gas · Explosive gas

Scalding steam · Bloodwort spores · Putrescence · Putrid smoke

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