Can a person be a smoker and still be saved? Yes.
Some take the view that smoking is a sin. According to both the Old and New Testaments, sin is defined as transgression of Torah. Nowhere in Torah is smoking listed as a prohibited act the way other acts are prohibited. According to the Torah, smoking is not a sin.
Should someone saved be a smoker? No.
Reducing the length of our lives from sucking on cancer sticks is not the best way to express our gratitude to our Creator. We're to be good stewards, and this includes the way we are to take care of the vessel G-d gave us.
__________________
I’m not a scholar, just a crazy Jewish Believer who wants to see no one deceived and everyone saved.
Shalom uv’racha b’shem Yeshua Mishikheinu!
Peace and blessings unto you in the Name of Yeshua, Our Messiah!