I smoked for 30+ years. I almost died in 2014 my o2 was in the mid 70’s and my co2 was through the roof. I woke up in the hospital in ICU vowed to never touch another cigarette again. I stuck with patches for months but still craved that hand to mouth. A friend had turned me on to vaping and have been vaping ever since. I feel so much better. I can breathe better. So anyone that has anything against vaping needs to talk to me because my o2 is now mid 90’s and co2 in normal range.