Answer:
a highly unpleasant or unhealthy smell or vapor.
Step-by-step explanation:
mi·as·ma
/mīˈazmə,mēˈazmə/
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nounLITERARY
a highly unpleasant or unhealthy smell or vapor.
"a miasma of stale alcohol hung around him like marsh gas"
Similar:
stink
reek
stench
smell
odor
malodor
pong
niff
whiff
guff
an oppressive or unpleasant atmosphere which surrounds or emanates from something.