Many people assume vaping is harmless to bystanders, but secondhand aerosol can contain ultrafine particles and chemical residues. Researchers are examining how exposure may affect airways and overall health, especially for children Study uncovers the hidden dangers of secondhand vape exposure to children Secondhand vape plumes could form lung damaging radicals Effect of second hand fumes from vaping on young lungs Secondhand smoke and secondhand aerosol Second hand smoke from e cigarettes 'poses NO risk to the public' Daily Mail Online