In 10 years of studying thirdhand smoke, which is the toxic cigarette residue that clings to virtually all indoor surfaces for months or years, Berkeley Lab scientist Hugo Destaillats said the most frequent question he hears from the public is how to remediate property where a smoker once lived. Remediation companies frequently use ozone generators
Marketed as a healthier alternative to cigarettes, a new class of tobacco products called heat-not-burn devices is quickly gaining in popularity across the globe. A study by Berkeley Lab’s Indoor Environment Group shows that, although the chemical emissions from these devices are lower than those produced by conventional cigarettes, they are still high enough to raise concern.
Researchers at Berkeley Lab identified thirdhand smoke, the toxic residues that linger on indoor surfaces and in dust long after a cigarette has been extinguished, as a health hazard nearly 10 years ago. Now a new study has found that it also increases lung cancer risk in mice.
Berkeley Lab researchers found that the sticky residue left behind by tobacco smoke led to changes in weight and blood cell count in mice. These latest findings add to a growing body of evidence that thirdhand smoke exposure may be harmful.
Berkeley Lab researchers have been awarded $1.3 million for two sets of studies to better understand the health impacts of thirdhand smoke, the noxious residue that clings to virtually all indoor surfaces long after the secondhand smoke from a cigarette has cleared out.
Scientists at Berkeley Lab, who have made important findings on the dangers of thirdhand smoke and how it adsorbs strongly onto indoor surfaces, have published a new study assessing the health effects of thirdhand smoke constituents present in indoor air. Looking at levels of more than 50 volatile organic compounds (VOCs) and airborne particles for 18 hours after smoking had taken place, they found that thirdhand smoke continues to have harmful health impacts for many hours after a cigarette has been extinguished.
A study led by researchers from Lawrence Berkeley National Laboratory has found for the first time that thirdhand smoke—the noxious residue that clings to virtually all surfaces long after the secondhand smoke from a cigarette has cleared out—causes significant genetic damage in human cells.
Using the unique capabilities of the Chemical Dynamics Beamline at Berkeley Lab’s Advanced Light Source, researchers have demonstrated that ozone can react with the nicotine in secondhand tobacco smoke to form ultrafine particles that may become a bigger threat to asthma sufferers than nicotine itself.
Nicotine in third-hand smoke, the residue from tobacco smoke that clings to virtually all surfaces long after a cigarette has been extinguished, reacts with the common indoor air pollutant nitrous acid to produce dangerous carcinogens. This new potential health hazard was revealed in a multi-institutional study led by researchers with Berkeley Lab.