Indoors, in addition to particulate matter pollution, there is also the adverse effect of organic pollutants found in paints and varnishes, floor coverings and wallpaper, upholstery and textiles, computers, printers, and copiers. There are also allergens and animal hair. Since people in India spend over 90% of their time in interiors, this is adversely affected by pollutants such as formaldehyde, toluene, benzene, volatile chlorinated hydrocarbons and residual solvents. In sum, these are significant stress factors for the immune system, because most pollutants enter the human body via the air. The indoor air is therefore blamed for a number of diseases.
Lack of ventilation and the use of air conditioning and ventilation systems in low-energy homes and office buildings can increase the levels of toxins to levels that are harmful to health. Especially allergic and asthmatic people have a hard time in closed rooms to create a clean and irritable indoor climate in order to be able to stay there carefree and undisturbed. Symptoms and diseases, such as mucosal irritations, skin irritations, headaches, respiratory irritation, tiredness, nausea, atopic dermatitis, bronchitis, kidney damage, liver damage, nerve damage and cancer are the result of a constant overload of the human body by these environmental toxins.