The rising of a fragrance (6)
I believe the answer is:
ascent
'the rising' is the definition.
(thesaurus)
'a fragrance' is the wordplay.
'fragrance' becomes 'scent' (synonyms).
'a'+'scent'='ASCENT'
'of' acts as a link.
(Other definitions for ascent that I've seen before include "made by Hilary and Tenzing" , "The climbing of a peak" , "Upward movement" , "Incline" , "Upwards motion" .)