mi ‧ as ‧ ma /miˈæzmə, maɪ-/ BrE AmE noun [singular] literary
[ Date: 1600-1700 ; Language: Greek ; Origin: 'making dirty' ]
1 . dirty air or a thick unpleasant mist that smells bad:
He looked up at me through a miasma of cigarette smoke.
A foul miasma lay over the town.
2 . an evil influence or feeling that seems to surround a person or place
miasma of
The miasma of defeat hung over them.