Reportedly posted perfume (5)
I believe the answer is:
scent
'perfume' is the definition.
(synonyms)
'reportedly posted' is the wordplay.
'reportedly' shows a homophone (sound like).
'posted' becomes 'sent' ('send' can be a synonym of 'post').
'sent' is a homophone of 'SCENT'.
(Other definitions for scent that I've seen before include "Perfume for the tracker" , "Trail" , "Animal smell" , "Distinctive odour" , "Clue" .)