Nothing so dour could make you perfumed (7)
I believe the answer is:
odorous
'perfumed' is the definition.
('odorous' can be a synonym of 'perfumed')
'nothing so dour could make you' is the wordplay.
'nothing' becomes 'o' (looks like zero - 0).
'could make you' indicates an anagram.
'so'+'dour'='sodour'
'sodour' with letters rearranged gives 'dorous'.
'o'+'dorous'='ODOROUS'
(Other definitions for odorous that I've seen before include "Fragrant" , "Aromatic" , "Sweet-smelling" , "Smelling" , "Giving off a smell" .)