indoor air more contaminated than outdoor - concept image with the most common dangerous domestic pollutants in our homes

air asbestos bacteria biological carbon check checklist chemical cigarette cleaning compounds concept concepts condensation contaminants danger dioxide domestic dust electromagnetic environmental fields formaldehyde fumes fungal germs heaters home household ideas indoor indoors lead life list matter mite mold monoxide nitrogen organic outdoor oxide particles particulate passive pesticides pollutants polluting pollution pressed products quality radon radot schedule secondhand smoke smoking stale stoves test tobacco vapors vocs volatile wood