No idea, just a question about pollution. First off, do brick wall contain pollution?
Is there any fast acting anti-pollution items/things I may not have heard about?

The reason I'm asking this is because my factory was running full tilt because I had a lot of construction going on, the pollution was really wide and thick. But all of a sudden it shrinks and clears up a bit. To the point where I once was getting consistent attacks to where there was nothing.. Any answers? I'm ok with it but it's scaring me with the fact something may be off that could get me killed/ruin my day when I need it. (I have been using solar power for a while) and it happened right after a bitter got in and destroyed some stuff at my oil area 