I don't know if this is a good idea (really, I know very little about this, save having read about the concept a long time ago), but everyone jumping to the con

I don't know if this is a good idea (really, I know very little about this, save having read about the concept a long time ago), but everyone jumping to the conclusion that this must be a bad idea should look up thermal inversions: https://en.wikipedia.org/wiki/Inversion_(meteorology) https://en.wikipedia.org/wiki/Inversion_(meteorology). As I understand them, they prevent the dispersion of smog, and create much denser pockets of pollution than would exist in a city that didn't have a thermal inversion. So it seems like one reading of the situation is that most cities "make the pollution someone else's problem" in the sense that their pollutants disperse in a way that pollutants from cities like Delhi don't.