E Cigs and Second Hand Vaping: Dangers and Protections E Cigarettes (Vapes) Smoking and Tobacco Use CDC Secondhand smoke is harmful to those around you, putting them at risk for serious health issues. Protect your loved ones from the dangers of secondhand smoke by getting started with 802 Quits Myth Buster ~ "Second hand vape smoke" is actually water vapour and is not harmful to other people or the environment. #vape #vaping #vapeuk #ecigerette #smoke #quit