Dude, come the fuck on! You know damn well that the use of the word polluted or unpolluted is not referring to the atmosphere in general. It is referring to pot smoke in the air!
Also, can you not read? I am not able to avoid a smoke as you suggested if I am sitting in a hotel room and the smoke is outside my door. Come on! Come up with some good counterpoints.
Dude, come the fuck on! You know damn well that the use of the word polluted or unpolluted is not referring to the atmosphere in general. It is referring to pot smoke in the air!