First hand smoke comes from all combustible tobacco products. This includes Cigarettes, Cigars, Pipes, Hookah, and VAPES. This is the primary source of nicotine addiction. No amount of Second hand smoke is safe and Secondhand exposure from vaping marijuana: Concentrations, emissions, and exposures determined using both research grade and low cost monitors ScienceDirect Does Vaping Ruin Taste Buds? Vaper's Tongue Smoker's Tongue Children at risk: Emory study uncovers the hidden dangers of secondhand vape exposure