Some smells reported as cash (5)
I believe the answer is:
cents
'cash' is the definition.
'some smells reported' is the wordplay.
'some smells' becomes 'scents' ('scent' can be a synonym of 'smell').
'reported' shows a homophone (sound like).
'scents' is a homophone of 'CENTS'.
'as' is the link.
(Other definitions for cents that I've seen before include "US money, e.g." , "Hundredths of dollar" , "Fractions of dollar" , "money abroad" , "American coins" .)