In addition, people who may be exposed to indoor pollutants for the longest periods of time are often those most susceptible to the effects of indoor pollution. Such groups include the young, the elderly, and the chronically ill, especially those suffering from respiratory or cardiovascular disease.

The public is advised to use proven methods of controlling indoor airborne pollution. These methods include eliminating or controlling pollutant sources, increasing outdoor ventilation, and using proven methods of cleaning airborne contaminants. Here are three common approaches to reducing indoor pollution:

Using Purifiers
The best method used to supplement source control and ventilation is employing the use of air purification systems. Filters, electronic airborne particle cleaners and ionizers are often used to remove airborne particles, and gas adsorbing material is sometimes used to remove gaseous contaminants.

Source Control
Source control involves minimizing the use of products and materials that cause indoor pollution, employing good hygiene practices to minimize biological contaminants (including the control of humidity and moisture, and occasional cleaning and disinfection of wet or moist surfaces), and using good housekeeping practices to control particles.

Ventilation
Outdoor ventilation is also effective and commonly employed. Ventilation methods include installing an exhaust fan close to the source of contaminants, increasing outdoor airflows in mechanical ventilation units, and opening windows, especially when pollutant sources are in use.