The dirty, dangerous secret of California's legal weed Los Angeles Times Now, fly a helicopter taxi from Mumbai to Tarapur, Vapi Cond Nast Traveller India When someone vapes around others they expose them to 'second hand aerosol'. But what happens to that aerosol then? Does it disappear or is it like cigarette smoke and stays around, sticking to Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Secondhand exposure from vaping marijuana: Concentrations, emissions, and exposures determined using both research grade and low cost monitors ScienceDirect The Hidden Dangers of THC Concentrates and Vapes for Teenagers: How University Behavioral Health Can Help University Behavioral Health of Denton