Vapour vs Smoke: What's the Difference? Buy Vapes Online in Canada Is vaping safer than smoking or worse? Allen Carr's Easyway Is Second hand Vape Smoke Harmful Is Secondhand Vape Smoke Bad for You? Vaping: not a safe alternative to smoking, new study suggests, and it may be more harmful to health than tobacco in normal cigarettes South China Morning Post Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center