Indoor can be to 50x more polluted that outdoor 
                        
                        Up to 900 pollutants can be found inside your home at one time!
From cleaning products, furniture and man made furnishings, pollutants incude VOC's (Volatile Organic Compounds), smoke, pollen, dust and particulate matter (PM2.5, PM10) and all of these pollutants need to be managed OUT OF YOUR HOME via a ventilation system!
