Relating to the sense of smell (9)
I believe the answer is:
olfactory
'relating to the sense of smell' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for olfactory that I've seen before include "Fool Tracy (anag) - relating to the sense of smell" , "Pertaining to the sense of smell" , "Detecting scent" , "concerned with smell" , "Dealing with smells" .)