I'm feeling with you. 10 years ago my father gets ill of bladder cancer. He was a smoker for about 35 years. After 3 weeks in hospital, he gets a bad stroke and reading or speaking will never more be possible for him. I'm sorry to say that he still smoked again. 2 years ago he gets ill of a pulmonary emphysema (i don't know if it's translated good , its a lung illnes) he often gets breathing trouble after smoking and thought he must die. 5 month ago he started
vaping with me, and today he is much better. No more choking fits. No more fear to go to sleep and don't wake up again. Noone can bring him back to full health, but i think that
vaping extends his life a few years, and that makes him and me happy

. Sorry for my bad english, but all the medical therms are difficult for me, i hope you can understand it.