Scent of a woman (5)

I think it could be either:

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12*

aroma

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'scent of a woman' is the definition.
(I've seen this in another clue)

'a woman' is the wordplay.
'woman' becomes 'roma' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'a'+'roma'='AROMA'

Can you help me to learn more?

(Other definitions for aroma that I've seen before include "particular charm" , "Fragrance of spices" , "Distinctive scent" , "Redolence" , "Savour" .)

I've seen this clue in the Evening Standard.

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