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An American study recently showed that tobacco residues were still present in a casino despite the smoking ban in place for six months. Traces of carcinogenic components have been found in non-smokers. It is not because they emit more smoke than butts and tobacco residues do not continue to be harmful. Once the smoke is gone, the hair and clothing remain impregnated with nicotine, cotinine and NNK lung carcinogen. In addition, residues can also be deposited, and for a very long time, on carpets, furniture or curtains. Six months after a smoking ban and despite permanent ventilation, researchers at the University of San Diego have discovered traces of these residues in a casino, as reported by Ouest-France. They found these components by analyzing the urine and fingers of non-smokers. Georg Matt, author of the study, said of the findings: "Casinos are unusual environments because of the amount of tobacco that is smoked 24 hours a day, 7 days a week. After years of smoking , layers of smoke residues remain stuck to the surfaces and penetrate deep into the material. [...] Since the tobacco residues remain hooked well after the smoking ban, you are exposed even after the disappearance of the smoke ". To get rid of these residues, intensive cleaning of all surfaces is necessary according to Georg Matt. A possible change of curtains and carpets is even possible. Children would be the most exposed to "third-hand smoking" For the moment, the damage of these residues on health have not been determined. Last September, a study found a negative effect on the liver and brain of mice after a month of exposure. After six months of exposure, their risk of developing diabetes increased by 30%. Jonathan Winickoff, a physician at the Massachusetts General Hospital, explains that children are particularly vulnerable to "third-hand smoking": "Children breathe faster than adults and are more likely to be in contact with the surfaces of the home. receive a dose about twenty times stronger than adults ". If the health risks have not yet been proven, >quoteit would be better to avoid smoking at home
