Obviously v.v. bad for you (directly or passively) - already banned in public places etc. Young people continue to start smoking (although I don’t know the figures for this anecdata)
My DM had been a smoker all her life and her lungs are giving up. Nothing official as she won’t go to the drs but wheezes and coughs all the time.
It’s gotten me thinking that a full ban on selling tobacco/smoking in public must be on the cards at some point - but when?