I know, me either. My husband vaped for a year and it helped him stop smoking. He also had a history of pneumonia, no side effects. I tried vaping full time too to help me quit, my breathing was better and I quit being out of breath all the time. The only side effect was my gums bled more at the dentist when they poked them. Seems that the nicotine from cigarettes constrict your nerve endings, slowing the blood flow( I know too much info). My dentist did NOT approve of vaping though, and let me know. He's anti-smoking anything.