Pan, say, with good smell canine knocked over (5,3)
I believe the answer is:
greek god
'pan say' is the definition.
(pan is a kind of Greek God)
'good smell canine knocked over' is the wordplay.
'good smell' becomes 'greek' (I can't explain this - if you can you should give a lot more credence to this answer).
'canine' becomes 'dog' (dog is a kind of canine).
'knocked over' says the letters should be written backwards.
'dog' backwards is 'god'.
'greek'+'god'='GREEK GOD'
'with' acts as a link.
Can you help me to learn more?
(Other definitions for greek god that I've seen before include "dish" , "Pan, for example" .)