Secondhand Smoke Social Media Message Library Tobacco Education Clearinghouse of California Secondhand exposure to e cigarette aerosol and lung health Research Communities by Springer Nature Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy Can I be Affected by Secondhand Vape Smoke? Secondhand vape exposure: Risks and side effects Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC