There is a way for smoking to be OK, you'd have to change biology and chemistry laws first, not legal laws. Good luck with that.

It is impossible in this universe for smoking to be neutral in your health. In another universe, sure but not this one. It is not a moral issue but one of which universe we live in. A universe where smoking is non consequential or one where it is bad. We live in the universe where smoking is bad.

This is not a moral question but a question of which reality we find ourselves in.