The sweet smell of anger? (7)
I believe the answer is:
incense
I believe this is a double definition.
'the sweet smell' is the first definition.
(thesaurus)
'anger' is the second definition.
(to incense is make angry)
'of' acts as a link.
(Other definitions for incense that I've seen before include "Substance burned for its sweet smell" , "Infuriate" , "Church perfume" , "Make very angry about the fragrant smoke?" , "Perfume, make angry" .)