Hello! I was wondering about that too. I saw a YouTube video of them interviewed in Germany not to long ago. Guy said that they had brought in a hypnotist to help him stop smoking and the interviewer later asked him if he was already a non- smoker and Guy responded with a "pretty much". But, I'm not sure if he stopped for good. I don't know if Jonny stopped, either. Glad to know that someone else is wondering about this.☺