Parents who smoke often open a window or turn on a fan to clear the air for their children, but experts now have identified a related threat to children's health that isn't as easy to get rid of: third-hand smoke。
That's the term being 1 颗粒) clinging(依附) to smokers' hair and 2 致癌物) and even radioactive materials that young children can get on their hands and take in, 4 。if they're crawling or playing on the floor, not to mention cushions and carpeting, that stays long after second-hand smoke has cleared from a room. The remaining 3 heavy metals, carcinogens( to describe the invisible yet poisonous mixture of gases and particles(
