Crossword Genius

Small fish producing appalling smell (6)

Ross

I believe the answer is:

stench

'appalling smell' is the definition.
(a stench is a terrible 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'

'producing' acts as a link.

(Other definitions for stench that I've seen before include "Horrid smell" , "Miasma" , "A really bad smell" , "A really vile smell" , "Reek" .)

I've seen this clue in The Times.
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