Do you know that you can not avoid the “third-hand smoke”? The health risks of “third-hand smoke” cannot be ignored. For example, in the cab and restaurant dining room when the previous guests smoked, and the smell of smoke is very strong; or when the children are not at home in the family room and living room bedroom smoking, these places because the smoker has smoked here, after the smoker left, the carcinogenic substances in tobacco on the sofa, carpet, pillow covers and a variety of home decorations, or smokers in the outdoor smoking after the harmful substances in tobacco The harmful substances in tobacco will also stay on smokers’ hair, sweaters or coats, and these harmful substances in tobacco and certain substances in the air will combine to become carcinogenic nitrite substances. People’s daily lives are pervaded by a mentality in which safety anxiety and risk indifference coexist. The people are alert to sudden and damaging risks and insufficiently guarded against slow-release risks that do not directly harm lives. The philosopher Feuerbach famously and widely said that man is what he eats. Through the window of smoking, we can see more of the relationship between people and people and people and society. Compared with second-hand smoke, third-hand smoke has a more intimate nature. In other words, the family, as a relatively closed social space, is the main source of “third-hand smoke. In smoking families, how to protect the health of family members has become the most urgent and frequent questioning. The greatest harm of third-hand smoke is hidden and long-lasting. Unlike secondhand smoke that is inhaled in public places, thirdhand smoke poses a hidden hazard. If not cleaned regularly and thoroughly, these toxic substances can remain on the surfaces of various objects in the room and in the car for a long time and generate smoke poisoning from third-hand smoke. The main victims of third-hand smoke are children. According to Harvard Medical School, children like to touch and lick objects with their tongues and put their fingers in their mouths, so the smoke poison from third-hand smoke is more than 20 times more harmful to children than to adults. Housewives, hotel and domestic workers are also the main victims of third-hand smoke because they have more exposure to objects in hotels and homes. It is important to pay attention to “third-hand smoke”, because even a small problem can not help but accumulate the “cumulative harm” over time. We hope that smokers will take care of our infants and children, who often play on sofas, carpets, and clothes, and some young children sometimes like to crawl and play on sofas or carpets, often putting food into their mouths as they fall on them. Some young parents, knowing that smoking is harmful to the health of their families and children, do not smoke at home and indoors, go outdoors to smoke enough to come home again, hair, sweaters or coats are left on the harmful substances of tobacco, with the child to make out or hold the child, these “third-hand smoke” is also the same health risks to young people and children. The health hazards of tobacco are well known, and it is the leading cause of lung cancer, which has been repeatedly publicized and emphasized for decades. We hope that the whole society will work together to reduce the health hazards of second-hand smoke and third-hand smoke through legislation to ban smoking in public places.