fumes

https://doi.org/10.1351/goldbook.F02552
In popular usage, a term often taken to mean airborne effluents, unpleasant and malodorous, which might arise from chemical processes.
See also:
smoke
Source:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2191 [Terms] [Paper]