Air pollution is usually identified as the main cause of respiratory diseases such as asthma, respiratory failure, bronchial diseases, or allergies. Harmful airborne dust in the air can cause other difficulties. There is no doubt that smog increases the risk of cancer. It is caused by benzopyrene, one of the most toxic components of smog. It is caused, among other things, by combustion of a poor-quality fuel, especially garbage and varnished old furniture. Benzopyrene does not cause immediate damage but is deposited in the body and causes chronic diseases over time. The interval between first contact with this substance and the occurrence of cancer may be as long as 5 years. Another harmful substance - nitrogen dioxide, causes burning of the eyes, suffocating cough, headaches and reduces the body's resistance and immunity.

Breathing of contaminated air is also dangerous for pregnant women. The harmful airborne dust PM10 and PM2.5 may induce abortion or cause premature birth. Inhalation of toxins can also have a negative impact on the child's intellectual development and cause memory problems. Smog causes frequent pneumonia and bronchitis in children. Diseases caused by inhalation of harmful substances often have a worse course and cause health problems even in the following stages of life. At high concentrations of pollutants, children should stay outside for as little time as possible, that is why monitoring the air quality around schools and nurseries is especially important.