noun
miasma; bad air
Formal/literary term for foul air once believed to cause disease. Now primarily historical or used in fantasy/game settings.
昔は瘴気が病気の原因だと考えられていた。
In the past, miasma was thought to be the cause of disease.
その湿地帯には瘴気が立ち込めていると伝
It is said that miasma hangs over that marshland.