Crossword Genius

Smell? Nothing serious (5)

Ross

I believe the answer is:

odour

'smell?' is the definition.
(I know that smell can be written as odour)

'nothing serious' is the wordplay.
'nothing' becomes 'O' (looks like zero - 0).
'serious' becomes 'dour' (I've seen this in other clues).
'o'+'dour'='ODOUR'

(Other definitions for odour that I've seen before include "Bouquet" , "reputation" , "Aroma, smell" , "A smell, good or bad" , "Perfume" .)

I've seen this clue in The Telegraph.
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