THESAURUS
Sniff
Aqua-Lung, artificial respiration, aspirate, aspiration, assibilate, assibilation, asthmatic wheeze, be warm, blow, breath, breath of air, breathe, breathe hard, breathe in, breathe out, breathing, broken wind, burn, buzz, cough, cut, cut direct, disregard, draw in, effervesce, effervescence, effervescing, exhalation, exhale, exhaust, expel, expiration, expire, exsufflation, feeling, fizz, fizzle, fizzling, frication, frictional rustling, gasp, get wind of, gulp, hack, hiccup, hint, hiss, hissing, huff, humiliation, hush, hushing, inhalation, inhalator, inhale, inhalement, inspiration, inspire, insufflation, iron lung, lisp, mouth-to-mouth resuscitation, nose, nose out, odor, oxygen mask, oxygen tent, pant, puff, rebuff, repulse, respiration, respire, rhonchus, scent, scuba, shush, shushing, sibilance, sibilate, sibilation, siffle, sigh, sigmatism, siss, sissing, sizz, sizzle, sizzling, slight, slurp, smell, smell of, smell out, sneer, sneeze, sneezing, sniff at, sniff out, sniffle, snore, snoring, snort, snub, snuff, snuff in, snuffle, spirit, spit, splutter, spurn, spurning, sputter, squash, squelch, squish, sternutation, stertor, suck, suck in, sucking, suckle, suction, suggestion, suspiration, swish, the cold shoulder, the go-by, wheeze, whiff, whish, whistle, whistling, white noise, whiz, whoosh, wind, zip
ROGET THESAURUS
Sniff
Wind
VB
blow, waft, blow hard, blow great guns, blow a hurricane, wuther, stream, issue, respire, breathe, puff, whiff, whiffle, gasp, wheeze, snuff, snuffle, sniff, sniffle, sneeze, cough, fan, ventilate, inflate, perflate, blow up.
Odor
VB
have an odor, smell, smell of, smell strong of, exhale, give out a smell, reek, reek of, scent, smell, scent, snuff, snuff up, sniff, nose, inhale.
Discovery
VB
discover, find, determine, evolve, learn, fix upon, pick up, find out, trace out, make out, hunt out, fish out, worm out, ferret out, root out, fathom, bring out, draw out, educe, elicit, bring to light, dig out, grub up, fish up, unearth, disinter, solve, resolve, elucidate, unriddle, unravel, unlock, crack, crack open, pick up, open the lock, find a clue, find clew a to, find the key to the riddle, interpret, disclose, trace, get at, hit it, have it, lay one's finger, lay one's hands upon, spot, get at the truth, arrive at the truth, put the saddle on the right horse, hit the right nail on the head, be near the truth, be warm, get warmer, burn, smoke, scent, sniff, catch a whiff of, smell a rat, open the eyes to, see through, see daylight, see in its true colors, see the cloven foot, detect, catch, catch tripping, pitch upon, fall upon, light upon, hit upon, stumble upon, pop upon, come across, come onto, meet with, meet up with, fall in with, recognize, realize, verify, make certain of, identify, Int, eureka!, aha!, I've got it!.