Secondhand smoke and secondhand aerosol Secondhand vape plumes could form lung damaging radicals American Chemical Society Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Sitting somewhere when a cloud of cotton candy vapor washes over you? If you can smell the sweet scent of a vape, that's not a great sign. Second hand smoke from e cigarettes 'poses NO risk to the public' Daily Mail Online