Pollution? Whats that? I simply put a factory or two, surround with dwellings for the staff and their belongings, move a little and repeat. My pure industry cities have close to zero traffic and pollution never rizes beyond yellowish. But i understand you as well - i assume you CLUSTER your smokehouses forgetting the basic gas cohesion and dissipation related physics laws And then the stuff turns into a mini-volcanoes, heh. Thing is, high enough vent never smokes directly under itself so you can quite live there but if your living block happens to be at big enough distance underwind, there you have it. Fifty meters of thick trees all it takes to live close to something not electro-chemistry related and feel well enough. Heck, transporting people in-between zones pollutes comparatedly much! A pity traffic pollution have not yet been added in XL as it is in SimCity Societies.
