how is the air quality in your home? - concept with residential building model and text

activity air architecture asbestos bacteria biological building carbon check chemical cigarette comfort compounds concept concepts condensation contaminants dioxide dust formaldehyde fumes fungal gas heaters home house household iaq indoor indoors lead list matter mite mold monoxide nitrogen organic outdoors oxide particles particulate passive pollutants pollution products quality radon secondhand smoke smoking stale stoves test tobacco vapors vocs volatile