Miasma
1: a vaporous exhalation formerly believed to cause disease
also : a heavy vaporous emanation (see EMANATION sense 2) or atmospherea miasma of tobacco smoke
Miasma theory was the scientific explanation for disease prior to germ theory. Miasma means ‘pollution’ but is a holistic word both physical and metaphysical. Miasma could emanate from swamps, night air, ships, dead bodies, ill-will and immorality. Prisons in particular were believed to generate a lot of Miasma due to the festering, forgotten people inside.