The hazards of soot may firstly cause clogged pores and accelerate the aging of skin, and secondly, it may also cause rhinitis, pneumonia and other diseases. If prolonged exposure to soot, which soot particles adsorbed on the human epidermis, may clog pores, accelerate the aging of skin tissues, and ultimately lead to the skin becomes rough and yellowish. Oil smoke contains acrolein and other substances, which has a strong irritating odor, long-term exposure to oil smoke, may stimulate the nasal tissues, thereby triggering the occurrence of rhinitis. Oil smoke contains benzo(a)pyrene, volatile nitrosamines and other carcinogenic substances, if long-term exposure to oil smoke, may make the human body cell tissue lesions, thereby increasing the incidence of lung cancer and other cancers. There are many hazards of grease and smoke, it is recommended that patients try to use hoods in daily cooking to reduce the harm of grease and smoke on the human body. Avoid deep-frying and stir-frying as much as possible, which can also reduce the production of oil smoke. Open windows frequently to maintain indoor air circulation.