condition of fuming; an exhalation
• (n.) The fumes of drink.
Fu·mos'i·ty noun [ Confer Old French fumosité .] The fumes of drink. [ Obsolete] Chaucer. 
fumosity 1. The quality of being full of fumes or vapors. 2. The flatulent quality of various articles of food; the heady quality of wine, etc. 3. Ill-smelling breath; smell of food or drink in the breath. 4. A fumy or vaporous exhalation from anything, a fume; the volatile part given off from a mineral or the like.