Small coins for perfumes (6)
I believe the answer is:
scents
'for perfumes' is the definition.
('scent' can be a synonym of 'perfume')
'small coins' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'coins' becomes 'cents' (cent is a kind of coin).
's'+'cents'='SCENTS'
(Other definitions for scents that I've seen before include "Trails" , "Essences and perfumes" , "Distinctive odours, usually pleasant" , "Fragrances, smells" .)