i mention this because generally
smokers getting lung cancer are long time
smokers so if it
does benefit them, then i think it would apply to someone who's been a long-time smoker but has not been diagnosed with cancer.
either way...i don't know if you've ever quit smoking before, but it's worth it just because many things feel better. i quit 10 months ago. i still get urges sometimes...but ultimately it's great to be able to breath again and smell....