Pollution and Exercise

I don't believe ive ever seen a korean jogging around seoul. But occasionally I go against the grain and jog in the city at night. The problem is that no matter where you go in the city you'll be hard pressed to find a breath of fresh air. Whenever inclined to take a deep breath one is inevitably met with a putrid whiff of poop (maybe falty, old sewer systems?), cigerate smoke, traffic exaust, fresh throwup, rotting garbage composting on the sidewalk, or worse yet, a combination therein. So while im running i ponder whether or not im benifiting my health or afflicting my helpless lungs. in the end im forced to clasp my lips thereby blocking the mouth's airway to the trachea, and soley focus breathing through my inborn mini-filter: the nose. but since the nose is seemlessly bound to the olfactory capacity, my filter idea requires that i also endure the frequent pungency. i wonder if this polluted double edged sword is what deters koreans from running fanaticism.

Needless to say, I greatly look forward to some fresh air back at home.