Particles from exhaust fumes, forest fires, and other kinds of combustion, along with noxious gases including carbon monoxide, nitrogen oxides, sulfur dioxide, and chemical vapors, make up the particles that pollute our air.
The results of air pollution can be devastating. In 1952 London, thousands of people died because of smog concentrations far above normal. It was four years later that a "Clean Air Act" was passed to help prevent such a disaster from happening again.
Your concerns about air pollution, and air pollution causes are far from extreme. Everyone has the right to breathe clean air. Freedom from indoor air pollution is an important part of maintaining a healthy lifestyle.