The Collaborative International Dictionary of English v.0.48:

Fumous \Fum"ous\, a. [L. fumosus, fr. fumus smoke: cf. F.
   fumeux.]
   1. Producing smoke; smoky.
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   2. Producing fumes; full of fumes.
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            Garlic, onions, mustard, and such-like fumous
            things.                               --Barough
                                                  (1625).
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