Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
whiff [wɪf] n дунове́ние
to catch a whiff of sth ула́вливать (улови́ть perf) почу́ять за́пах чего́-н
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.