effluvium
C2Substantiv/US /ˈɛfflʌvɪʌm/ EFFLUVIUM; UK /ˈɛfflʌvɪʌm/ EFFLUVIUM/
Subtile or invisible emanation; exhalation perceived by the sense of smell; especially, noisome or noxious exhalation; as, the effluvium from diseased or putrefying bodies, or from ill drainage.
