How can I protect my child from thirdhand smoke in homes? Thirdhand Smoke Resource Center How Second hand Smoking Affects Pets Secondhand smoke damages lungs, MRIs show EurekAlert! How secondhand smoke, thirdhand smoke & vaping affects kids Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN