Early research says secondhand smoke from vaping may not be as bad as cigarettes, but it's still not harmless. https: fox59.com news national world does vaping cause secondhand smoke doctors explain the side effects E Cigs and Second Hand Vaping: Dangers and Protections Study suggests switching from smoking to vaping indoors may reduce children's secondhand exposure to nicotine Secondhand vape plumes could form lung damaging radicals