Perfume's dispatched by the sound of it (5)
I believe the answer is:
scent
'perfume's' is the definition.
(synonyms)
'dispatched by the sound of it' is the wordplay.
'dispatched' becomes 'sent' (I've seen this in another clue).
'by the sound of it' shows a homophone (sound like).
'sent' sounds like 'SCENT'.
(Other definitions for scent that I've seen before include "Bouquet" , "Get wind of" , "Distinctive aroma" , "Number of clues" , "Perfume for the tracker" .)