n. 25B6; noun
I caught a whiff of perfume : FAINT SMELL, trace, sniff, scent, odour, aroma.
(Brit. informal) there's a terrible whiff in here : STENCH, stink, smell, reek; Brit. informal pong, niff, hum; Scottish informal guff; N. Amer. informal funk.
the faintest whiff of irony : TRACE, hint, suggestion, impression, suspicion, soupçon, nuance, intimation, tinge, vein, shred, whisper, air, element, overtone.
whiffs of smoke from the boiler : PUFF, gust, flurry, breath, draught, waft.