Sounding nosy? (5)

I believe the answer is:

nasal

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This clue could be a double definition.

'sounding' is the first definition.
Both the answer and definition are adjectives. Maybe you can see an association between them that I don't see?

'nosy?' is the second definition.
(relating to the nose)

Can you help me to learn more?

(Other definitions for nasal that I've seen before include "Pertaining to the nose" , "Sniffer's" , "Rhinal" , "pinched" , "Relating to the nose" .)

I've seen this clue in the Evening Standard.

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