Flavourings make e cigarettes more harmful. Another good reason to ban them SEATCA No tobacco product is harmless according to CDC scientific evidence. E cigarette aerosol that users breathe from the device and exhale can contain harmful substances including heavy metals like lead, volatile organic compounds, HOW TO TALK TO YOUR KIDS ABOUT VAPING Don't Be Fooled: Vaping Is Just as Dangerous as Cigarettes E cigarettes can emit formaldehyde at high levels under conditions that have been reported to be non averse to users Scientific Reports