Let him smoke. Read this. I smoke and I'll keep on. Mom smokes at 82, not a single health issue. I realize this may tick some of you off, but smoking has been around way longer than you realize....nicotene is a natural anti-depressant and stress reliever. Mucus on the inside of the lungs can protect against certain disease.
http://coloyan.com/blog/index.php/swine-flu-smoke-em-if-you-got-it/