Secondhand Smoke Social Media Message Library Tobacco Education Clearinghouse of California Secondhand vaping: The latest vaping health risk CNET Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center It's Not Just Cigarettes: Vape Residue Sticks on Surfaces Too Thirdhand Smoke Resource Center Secondhand vape exposure: Risks and side effects