Air pollution causes many harms that affect people. Causes respiratory diseases: Air pollution is the main cause of respiratory diseases such as pneumonia, allergies .... Cancer: Breathing a lot of toxic gases increases the risk of lung cancer. Not only that, toxic gas is transported in the body, causing cancer in many other organs Effects on the brain: Pollution can affect the brain, impair cognition and loss of memory Heart effects: Air pollution increases the risk of cardiovascular diseases, especially stroke Some other diseases such as causing infertility in men, increasing the risk of diabetes, damaging the skin, irritating eye diseases, ... For children: decreased IQ, increased risk of birth defects in the womb, early puberty in girls ... Indirect harm: Air pollution is harmful to flora and fauna. Thereby, reducing the quality of human life.