Washington: The stale odor that announces a smoker's entry into a room may be more than merely unpleasant. A new study by scientists at Yale University has found that compounds from tobacco smoke can infiltrate well-ventilated rooms by hitching a ride on people's clothes, skin, and hair and then evaporating slowly over time in a process called “off-gassing.” By placing a high-tech air sampling device in the exhaust duct of a non-smoking movie theater in Germany, the researchers determined that so-called “thirdhand” smoke exposed movie-goers to between one and 10 cigarettes of passive smoke, depending on the substance in question. Their paper was published in Science Advances on Wednesday. Se... [Read more]