I bought a vap and used it for about 2 or so weeks to quit smoking for my kids. Needless to say it DID quench my craving for nicotine (except for the morning and after-meal cig, those 2 are very hard to overcome) but for the most part I quit smoking cigs for 2 or 3 weeks. I was down to 2 or less cigs a day! I was proud of myself!!
Shortly after, I noticed in the morning I was waking up with this pain on a specific spot on my right lung. Toward the bottom. It was like...someone poking me very hard with their index finger right into my rib-cage, except the feeling was constant, even worse if I tried to "fake cough". I quit the vap and swapped back to regular cigs. Haven't had the lung pain or coughing since
-advice from a smoker