Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Exposure to secondhand vaping fumes among teens raises concerns UPI.com Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM From flavor bans to secondhand aerosol exposure, there's a lot people don't realize about how vaping impacts health, policy, and safety. Flavor restrictions can change tobacco use patterns, influence black market