Ozone is a strong oxidant with fishy smell. Its proportion is 1.66 times that of air, and it is often concentrated in the lower space of the office. Ozone is a silent killer! Ozone strongly stimulates human respiratory tract, causing sore throat, chest tightness and cough, bronchitis and emphysema; Ozone can cause people's neurotoxicity, dizziness, headache, vision loss and memory loss; Ozone can destroy vitamin E in human skin, leading to wrinkles and dark spots on human skin. Ozone can also destroy the immune function of human body, induce lymphocyte chromosome lesions, accelerate aging, and make pregnant women give birth to deformed children. Organic waste gas produced by carbon powder heating is a strong carcinogen, which can cause various cancers and cardiovascular diseases. Therefore, people must attach great importance to the harm caused by ozone and organic waste gas.