Does vaping (using e cigarettes) make a difference to our health and are there harms with second hand vaping? iHealth Facts Symptoms Of Second Hand Vape Smoke Secondhand smoke is harmful to those around you, putting them ? () Although often promoted as safer than traditional cigarettes, e cigarettes still harm the body in many ways. 1. Health Risks Most vapes contain nicotine, Secondhand Smoke vs Vape: What the Science Says