Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Bringing back evidence based Thursdays Secondhand vaping isn't harmless and the evidence is growing. A recent article from Medical News Today highlights what many of us in healthcare are already seeing: Second hand e cigarette vapour increases risk of poor respiratory health, study finds Nursing in Practice Dangers Of Second Hand Vapes Can Disposable Vapes Cause Secondhand Vapor Second Hand Vape Smoke Dangers