smoke / fume / tobacco

first-person singular present indicative of fumar

Eye dialect spelling of fomos, representing rural Brazilian Portuguese.

second-hand smoke (smoke from cigarettes, that any person including non-smokers could breathe in)

(chemistry) carbon black (fine black powder of amorphous carbon)

plural of negro de fumo

(Portugal) smokescreen (smoke used as a disguise, mask or cover, as of troops in battle) / (Portugal, idiomatic) smokescreen (anything used metaphorically to conceal or distract)

where there's smoke, there's fire (if there is telltale evidence of some event, the event is probably occurring)

third-person singular preterite indicative of fumar

smoky (producing smoke) / boastful, presumptuous