Sniffs rhymes with:
cliff's, cliffs, cliffs', fyffes, hieroglyphs, ifs, liffe's, riffs, skiffs, stiffs, ziff's
Sniffs sounds like:
sambuca, schnapps, schoenbeck, schoenhof's, shambaugh, shampoos, signifies, simba's, sinopec, snafus, snaps, snipes, snips, snobbish, snobs, snubs, snuffs, sosnoff's, succumbs, sunfish, sunobe's, swamps, symbiosis, synapse, synapses, synopsis, synovus