What might eject spirits? Answer to Scrooge (8)

I believe the answer is:

atomiser

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'what might eject spirits?' is the definition.
I can't judge whether this defines the answer.

'answer to scrooge' is the wordplay.
'answer' becomes 'a' (abbreviation eg in Q and A).
'scrooge' becomes 'miser' (Dickens' Ebenezer Scrooge is a miser).
'a'+'to'+'miser'='ATOMISER'

Can you help me to learn more?

(Other definitions for atomiser that I've seen before include "Amortise for spray-creating device" , "Dispenser for turning liquid into a fine spray" , "Fine spray producer" , "I, maestro can reduce liquids to a fine spray" , "Device for reducing liquid to a fine spray" .)

I've seen this clue in The Times.

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