Fumosite

Part of speech: noun

Definitions

1. The quality or condition of giving off smoke or fumes, or of being full of them
2. A smoky or fume-laden state, especially in the air or in something that gives off vapors
3. The property of producing or containing heavy smoke or fumes, as in a smoldering fire or a vapor-filled room

Etymology: "Fumus" is the Latin word for smoke, and "fumosus" meant smoky. English took the adjective as "fumose," and the noun "fumosity" (smokiness, or a smoky condition) follows the same pattern. "Fumosite" does not appear as a standard entry in major English dictionaries, so it is most likely a variant spelling of "fumosity," perhaps shaped by the common "-ite" ending, or a recent coinage built on the same Latin base. The "-osity" ending comes from Latin "-ositas," which turns an adjective like "fumosus" into a noun for a quality or state. Its meaning fits the definition you gave: a condition filled with fumes or vapor. If you need a dictionary-attested word, "fumosity" is the form to use.