Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN What Are the Risks from Secondhand Vape Smoke? NVB Inc. Exposure to secondhand vaping fumes among teens raises concerns UPI.com In secondhand vape, scientists smell risk American Heart Association Should I Be Concerned About Secondhand Vaping? Secondhand Smoke Vermont Department of Health