Hmmm. Well, you could just not breathe. Would that work?
Seriously, though, I'm surprised at how good the air quality here in San Diego North County is. California's crack-down on polluters has worked. It was much worse here in the 70's. I am not sure how much of Phoenix's bad air is from vehicles, agriculture, power plants, other industry. Have you ever looked into that? I'm sure the information is available. Not that it will help you at the moment, but could provide a focus for some political activism, if you like that sort of thing.
There is a point of no return unremarked at the time in most lives. Graham Greene The Comedians
A clean house is a sign of a misspent life.