Nap while ozone's refreshed (6)

I believe the answer is:

snooze

I'm a little stuck... Click here to teach me more about this clue!

'nap while' is the definition.
'snooze' can be an answer for 'nap' (snoozing is a kind of napping). I'm unsure of the 'while' bit.

'ozone's refreshed' is the wordplay.
'refreshed' is an anagram indicator.
'ozones' anagrammed gives 'SNOOZE'.

Can you help me to learn more?

(Other definitions for snooze that I've seen before include "Sleep lightly" , "Doze, nap" , "Forty winks" , "Quick nap" , "An informal nap" .)

I've seen this clue in the Sydney Morning Herald.

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