Cleaning products are considered pollution by NASA which is why they came up with a list of plants to clean the air in their hypothetical moonbase. You also have energy efficient homes which dont do the air exchange as much allowing for a build up of pollutants in the home and office but not all of them get considered pollutants. And just because you cant see the particulates like soot, doesnt mean the air is cleaner, its just different chemicals that still have a negative effect on the body. Look into Dieselgate to find out about those.