Taste or smell (5)
I believe the answer is:
sense
This clue is a double definition.
'taste' is the first definition.
(thesaurus)
'smell' is the second definition.
(I know that smell can be written as sense)
(Other definitions for sense that I've seen before include "experience" , "may be common" , "Eg, taste or touch" , "Get an impression" , "Sat lazily; hung loosely" .)