the.com/miasma

means A thick, murky atmosphere — literal foul air or figurative bad vibes — that seems to taint everything inside it.

from From Greek 'miasma,' meaning pollution or stain, from 'miainein,' to defile. The word entered English on the back of a real medical theory: that cholera, plague, and other diseases were spread by noxious vapors rising from rot, swamps, and corpses, rather than by germs. Doctors held their nose and burned sweet herbs to ward it off. The germ theory eventually buried miasma as science — but the word survived, drifting into metaphor to describe any heavy, oppressive mood or sense of decay.