A noisy nose? (6)

I believe the answer is:

hooter

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'nose?' is the definition.
(hooter can informally mean someone's nose)

I cannot understand how the remainder of the clue works.

(Other definitions for hooter that I've seen before include "Factory siren" , "It makes a loud noise" , "One scents" , "it smells" , "owl?" .)

I've seen this clue in the Evening Standard.

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