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Gas found in Australia once carbon is extracted (5)

Ross

I believe the answer is:

ozone

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(Other definitions for ozone that I've seen before include "Pungent form of oxygen" , "Bracing air (colloq.)" , "Fresh, bracing sea air" , "Gas; bracing sea air" , "(Depleted) layer of gas" .)

I've seen this clue in The Telegraph.
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