miasma

nouns

an unwholesome atmosphere
"the novel spun a miasma of death and decay"
miasm, miasma
is derived from
miasmic
unhealthy vapors rising from the ground or other sources
"the miasma of the marshes"; "a miasma of cigar smoke"
miasm, miasma
is derived from
miasmic
is derived from
miasmal