Secondhand vape plumes could form lung damaging radicals American Chemical Society Tobacco Smoke, Vaping, and Asthma AAFA.org Despite widespread smoke free policies in California, rates of recent exposure to secondhand tobacco smoke, vape aerosol, and cannabis smoke among adults aged 1864 have been slowly increasing since 2020, with vape exposure Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM Second hand smoke from e cigarettes 'poses NO risk to the public' Daily Mail Online