The faculty that enables us to distinguish scents(noun)
WordNet. Princeton University. 2010.
Use "sense of smell" in a sentence
"That FETID thing is not worth the trouble of reading, I didn't finish it, one turns away from such things, one does not spoil one's sense of smell by breathing them."
"Claws and teeth grew, sprouting long and sharp, and my already heightened sense of smell intensified."
"The Ogier might have no sense of smell to speak of well, no better than Faile's, say but he could sense mood where no human would see anything."