Secondhand Vape Exposure: Effects, Who's at Risk, and More The health risks of secondhand smoke are widely understood. But what about secondhand vaping? The Issues of Testing for Secondhand Smoke. Indoor Science Does vaping (using e cigarettes) make a difference to our health and are there harms with second hand vaping? iHealth Facts Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM In secondhand vape, scientists smell risk American Heart Association