> Clean oxygen in the room What's the difference between clean oxygen and dirty ... | Hacker News

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laureny on March 7, 2014 | parent | context | favorite | on: F.lux updated

> Clean oxygen in the room

What's the difference between clean oxygen and dirty oxygen?

LaGrange on March 7, 2014 [–]

Ozone, duh.

On a more serious note, it's probably an awkward way of saying "fresh air", i.e. not smelly.

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