Condition of air but not air-conditioning

So far, the worst part of Pune has been the quality of air. Like in all big cities of India, there is a lot of traffic on the streets and the vehicles are not being the best quality, the quality of the air is very poor. Before there is a bit of rain, smog becomes even more unbearable. 
The other day I was doing pranayama (breathing exercises) and since all the windows of the institute are always open because of the heat, I could literally feel it in my nose when there was a three-wheeler or a motorbike or a very old bus that has just passed on the street. You feel the smell of exhaust fumes or LPG (liquefied petroleum gas) in tuc-tucs and buses in your throat, it leaves a bitter after-taste in the mouth and you can almost imagine the blackness that touches your lungs.
Also instead of using air-conditioning (since it's very expensive), they have ceiling fans and other ventilators in the rooms and the practice hall as well. I don't mind that, I'm not a big fan of air-conditioning myself, the only problem is that the blades and metallic grids of these ventilators collect all the the dirt and dust in the air and than nicely spread it all over the place.
No wonder that many of us already have a respiratory problem, running nose, coughing, sneezing.
Just the more reason to practice more pranayama, isn't it?

Pune covered in smog