While the dangers of secondhand smoke are widely recognized, a new study led by Prof. Sun Yele at the Institute of Atmospheric Physics of the Chinese Academy of Sciences, has uncovered a more persistent and stealthy hazard lurking in indoor environments: thirdhand smoke. This residue—left on surfa ces long after a cigarette is extinguished—does not merely create a stale odor, but is a dynamic source of continuous air pollution. The study was recently published in Building and Environment. ...read more read less