1
: of, relating to, or like a miasma : caused by miasma : producing a miasma : characterized by miasma
rubber plantations of the miasmic jungle—Robert Littell
2
: foully contagious : noxious, mephitic
a clamorous square mile of plants and pens that spread a miasmic stench—Newsweek
miasmically
adverb
… the low-ceilinged room was already full of smoke that floated miasmically in the club's bluish light.
—William Kennedy, Very Old Bones, 1992
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Merriam-Webster unabridged