The air we breathe is not pure and healthy. There are harmful toxic petrol fumes and carbon dioxide emissions. This makes a sufficient reason for you to stay indoors, where you might think you are safe. However, many of us are not aware of the fact the indoor air pollution is more harmful than outdoor pollution.
Outdoor air pollution is a combination of different harmful substances, but the exact components vary depending on the sources of pollution nearby your location and weather. Air pollution is separated into indoor and outdoor pollution. Both indoor and outdoor air pollutants have been found as the causes of cancer, it is important to keep the risk in mind and take necessary precautions. Sources of outdoor air pollution can be man-made, such as vehicular emission, smoke from burning fuels. While dust, radon gas are natural sources of air pollution.