Lone creed about scent (9)
I believe the answer is:
redolence
'scent' is the definition.
(redolence is a kind of scent)
'lone creed about' is the wordplay.
'about' indicates an anagram.
'lone'+'creed'='lonecreed'
'lonecreed' anagrammed gives 'REDOLENCE'.
(Other definitions for redolence that I've seen before include "Fragrance" , "Sweet smell -- clone deer (anag)" , "Sweet or pleasant odour" .)