Third-hand smoke is tobacco somoke contamination that lingers in carpets, clothes and other materials hours or even days after a cigarette is put out. According to s study, a large number of people, particularly somokers, have no idea tha third-hand smoke is a health hazard for prople. Of the 1500 smokers and nonsmokers surveyed, the vast majority agreed that second-hand smoke is dangerous. But when asked whether they agreed with the statement, “Breathing air in a room today where people smoked yesterday can harm your healtlh,” only 65% of nonsmokers and 43% of smokers answered “yes”