Such perfumes make sound sense (6)
I believe the answer is:
scents
'such perfumes' is the definition.
'scents' can be an answer for 'perfumes' ('scent' can be a synonym of 'perfume'). I'm not certain of the 'such' bit.
'sound sense' is the wordplay.
'sound' shows a homophone (sound like).
'sense' sounds like 'SCENTS'.
'make' is the link.
Can you help me to learn more?
(Other definitions for scents that I've seen before include "Essences and perfumes" , "Distinctive odours, usually pleasant" , "Fragrances, smells" , "Trails" .)