Pollution from the Building There are much more pollution that we have right now compared with ten or twenty years ago. I still remember that I can have a clean air in the morning without having to go out of town. But the air pollution may not caused by smoke or car on the street. I can also caused by building material like paint and furnish.
There are even more dangerous material like asbestos that can cause Mesothelioma if it is inhaled by human for a long period of time.