Secondhand Smoke Social Media Message Library Tobacco Education Clearinghouse of California Secondhand Vape Exposure May Be Risky for Asthmatic Teens UCT Lung Institute Solving secondhand "vape smoke" at workand at home Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy Secondhand vape exposure detectable in children's saliva, breath Contemporary Pediatrics Secondhand Smoke Vermont Department of Health