What harm do the main pollutants in haze weather do to the body?

Haze: Also known as haze, dust, sulfuric acid, nitric acid, organic hydrocarbons and other particulate matter in the air can also make the atmosphere turbid, blur the vision and worsen the visibility. If the horizontal visibility is less than 65,438+00,000 meters, the visual field obstacle caused by this non-aqueous aerosol system is called haze or dust haze. Air pollution has an effect on lung cancer. Studies abroad have shown that toxic particles in the air in haze days are also an important cause of cardiovascular diseases. Besides cancer, smog is also a heart killer. Particulate pollutants on cloudy days will not only cause myocardial infarction, but also cause myocardial ischemia or injury. Common respiratory diseases such as chronic bronchitis, emphysema, asthma, bronchitis, rhinitis and upper and lower respiratory tract infections may also be caused by foggy days. Foreign research shows that with the increase of inhalable particulate matter concentration 10ug/m3, respiratory diseases increase by 3.4%, cardiovascular diseases increase by 1.4%, and total daily mortality increases by 1%. It reduces the defense function of human respiratory system, such as poor breathing, chest tightness, dry cough, dry throat and itching. Its harm is even more serious than "second-hand smoke".