Plenty of countries and localities have fixes in place for internal air quality issues. We've largely solved this in the US. Inida also has a lot of wood burning and 2-stroke engine vehicles. They have a lot of low hanging fruit here if they prioritize it. Dealing with atmospheric Co2 is a much bigger and thornier problem.
The US has largely solved the air quality problem, but the situation of water rights in the west feels to me like it carries the same tones of OP story.
