Soot, smaze, and SMOG are all forms of air pollution. SOOT is a fine powdery substance made up of tiny particles that are released into the air from burning coal and other fossil fuels. Smaze is a combination of smoke and haze, which is created when pollutants mix with dust and other particles in the air. SMOG is a combination of smoke and fog, which is created when pollutants mix with water vapor in the air. All three of these forms of air pollution can have negative impacts on human health and the environment.