If the quantity of dust. Gas, steam, steam, smog smell Slugs and radionuclides present in the atmosphere too. We call such a State as "air" or "air pollution".
If the quantity of gas, dust, odor, smoke, vapor, soot, steam and radioactivity in the atmosphere, too. We call such conditions as "bad air" or "air pollution".
If the quantity of dust, gas, smell, smoke, steam, steam soot and radioactivity in the atmosphere too. We call such conditions. "Air" or "air pollution".