Smell small fish (6)

I believe the answer is:

stench

'smell' is the definition.
(I know that stench is a type of smell)

'small fish' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'fish' becomes 'tench' (tench is a kind of fish).
's'+'tench'='STENCH'

(Other definitions for stench that I've seen before include "Evidence of corruption" , "Awful pong" , "Appalling smell" , "Awful smell" , "A really bad smell" .)

I've seen this clue in the Best For Puzzles.

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