Can vaping damage your lungs? What we do (and don't) know Harvard Health While smoke and vapor may seem similar, smoke from burning delivers a harmful chemical punch due to its chemical reaction. Explore what's inside both and uncover the differences here: https: www.pmi.com our science the difference between cigarette Vaping Indoors and How it Contributes to Sick Home Syndrome Bactronix Passive vaping time we see it like secondhand smoke and stand up for the right to clean air