Ozone's remarkably conducive to sleep (6)

I believe the answer is:

snooze

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

'to sleep' is the definition.
(I know that catch a wink is the is a more specific form of the action of snooze.)

'ozone's remarkably conducive' is the wordplay.
'ozone's' anagrams to 'SNOOZE'.
But, I am not clear how this is indicated.

Can you help me to learn more?

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

I've seen this clue in The Globe and Mail.

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