Amazing. I see one elderly woman who has smoked since age 13, still puffing at 80 with no problems.
You have to wonder about the genetics at that point.
My grandmother lived to 100, and only quit smoking because she moved in with my mother, who had a congenital lung disorder. When my brother asked why she waited until age 97 to quit smoking, she said, "Son, those things will kill you!"
Genetics has to be at least part of the answer - "peasant stock" - but my mother apparently didn't inherit those particular genes, having passed on at the tender age of 84.
I may have some of them, because when I had a chest x-ray at 48, the doctor couldn't believe I was a smoker. So I quit while I was ahead. I'd been smoking since I was 14.