Fog is tiny liquid particles suspended in the air, condensed by sprays and vapors. Commonly found in painting, mixing and cleaning operations. The painting environment is very harmful to the human body and can damage various systems of the body. Paint contains formaldehyde, benzene and other harmful substances, inhalation of too much paint volatiles, obvious irritation to the respiratory tract, can cause cough, shortness of breath, dyspnea. The nervous system can have dizziness, headaches, nausea, memory loss, etc. It also has a stimulating effect on the skin and eyes. For the gastrointestinal tract and circulatory system, there is some damage.