Caveats first. This is an exploration of the population, and we can draw no conclusions regarding the prevalence of childhood asthma and marijuana regulation, let alone second-hand marijuana smoke.

Second-hand e-cig smoke has 10 times less particulate matter than regular cigarette smoke; but higher levels of certain toxic metals, a new study finds. Despite a 10-fold decrease in overall ...

Third-hand smoke—the residual chemicals left by cigarette smoke—can linger on clothing and indoor surfaces such as furnishings and enter a building's ventilation system, researchers at Drexel ...

Thirdhand smoke lingers in homes and may expose children to toxic substances even without active smoking. Biomarker testing revealed tobacco exposure in all children studied, despite 60% of ...

exposure to second-hand smoke can have serious consequences on the health of people who have never smoked themselves, but who are exposed to other people's tobacco smoke. "Our findings suggest ...

Thirdhand smoke is what researchers use to describe what cigarettes leave on surfaces, walls, and furnishings of a home after the smoke clears. When nicotine in cigarette smoke interacts with ...

It took decades to prove that cigarette smoking causes cancer, heart disease, and early death. It took additional years to establish that secondhand smoke also kills. Now scientists are worried ...

In a recent study published in the journal Children, researchers retrospectively investigated the impacts of second-hand e-cigarette smoke exposure on childhood asthma, especially in home ...

Young children and babies forced to breathe second-hand cigarette smoke are more likely to be aggressive and anti-social as adults, according to new research. Even brief periods of passive smoking ...