煙霧 is read as えんむ (emmu) and means haze.
えんむ
emmu
えんむしつ
aerosol
えんまく
smokescreen
けむりかんちき
smoke detector
えんけいほうき
smoke alarm
えんまくをはる
to throw up a smoke screen
せきむ
evening mist
きり
spray
のうむ
heavy fog
あさぎり
morning fog
くろいきり
thick fog (of suspicion)
ないりくむ
inland fog
けぶ
smoke