A wanderer said to supply fragrance (5)
I believe the answer is:
aroma
'fragrance' is the definition.
(synonyms)
'a wanderer said' is the wordplay.
'wanderer' becomes 'roamer' (someone roaming around).
'said' indicates a 'sounds like' (homophone) clue.
'roamer' sounds like 'roma'.
'a'+'roma'='AROMA'
'to supply' is the link.
(Other definitions for aroma that I've seen before include "Scent - smell" , "Distinctive odour" , "A pleasant smell as of food" , "Redolence" , "Fragrance of spices" .)