Kitchen fumes are harmful to the human body mainly by deteriorating the skin, aggravating the symptoms of rhinitis or bronchitis, and increasing the risk of cancer. 1. Make the skin worse: kitchen fumes are composed of a variety of mixed pollutants, more harmful components, generated at high temperatures harmful gases and oil stains, easy to make the skin dull and lusterless, and over time will accelerate the skin relaxation or aging. 2. aggravate the symptoms of rhinitis or bronchitis: cooking oil at high temperatures generates acrolein, which stimulates the mucous membranes of the nose and throat, aggravating the symptoms of people suffering from rhinitis or bronchitis. 3. Increase the risk of cancer: when the oil temperature reaches 270 ° C ~ 280 ° C, will produce benzopyrene carcinogens, long-term inhalation is more harmful to the human body. But not as long as the exposure to kitchen fumes will definitely suffer from cancer. It is recommended that daily cooking, do not wait for the oil temperature is too high smoke before you start cooking, but also the whole process of opening the hood and frying after a few minutes to continue, while opening the doors and windows to ensure air circulation, to reduce the hazards of fumes.