a. and sb. [ad. L. fūmigant-em, pr. pple. of fūmigāre: see next.]
† A. adj. That fumes. Obs. B. sb. That which fumigates, rare.
172736. Bailey, Fumigant, smoaking, fuming.
1890. Scott. Leader, 7 Feb., 7. The production of the fashionable little fumigant [cigarette] has trebled in the last two years.