the most dangerous indoor pollutants with graph about air testing - concept image seen through a magnifying glass

air quality asbestos indoor indoors pollution pollutants concept concepts ideas searching research magnifying glass magnifier checking focus alertness surveillance domestic life radon radot test checklist schedule list check passive smoking secondhand smoke carbon monoxide nitrogen dioxide oxide particulate matter volatile organic compounds lead particles biological contaminants formaldehyde pressed wood products pesticides environmental tobacco heaters vocs household cleaning cigarette polluting dust chemical fumes bacteria germs danger