If you can't live in a smog-free environment, at least avoid smoke-filled rooms, high traffic areas, breathing in highway fumes and exercising near busy thoroughfares. Exercise outside when the smog rating is low. Exercise indoors in air conditioning when air quality is good. Plant lots of shrubbery in your yard. It's a good pollution and dirt from the street deterrent.
  
Thought for the day:
'Smoke gets in your eyes'....and your mouth, and your nose and your lungs as do pollutants.......hum the tune daily.