I don't think cigarettes will ever become cool again - I think the reason for that is because these days, we know unequivocally what the risks are. Back in the 60's/70's when my parents were growing up, no one knew the risks - I even have friends born in the 80's whose parents smoked and thought nothing of it at the time because research was still being done about the risks.
I think there's an effort being made to make cigarette smoking look cool again. A few years back you'd hardly see anyone smoking on a TV show. The last few TV series and movies I've watched have people smoking all over. I think though since fewer teens are interested in smoking cigarettes it never will be cool again.
I also grew up in the tail end of the smoking is cool era. I 100% don't think it will ever make a comeback. I watched as it quickly died, It was interesting to watch that transition. We know know how terrible it is for you.
Cigarettes may have a "cool" rep among younger kids but overall society certainly do not like people that smoke.