[fireman15]

My brother died from lung cancer when he was 45. Never smoked a day in his life.

My grandmother also died of complications from lung cancer. She never smoked, but as I was sitting in her house talking about how she never smoked, my eyes were irritated and the smoke of smell from her leaky old fireplace insert was annoying. I wondered at the time if that may have contributed and if I had done more to make sure that her house was smoke free if that might have helped keep her from getting sick.

[Smokin' Joe]

My grandmother cooked over a wood stove most of her life and lived to 101.

I think it is a complicated combination of factors, irritants and genetic propensity may be only two.

Her father was a carpenter who died of lung cancer in his 80s but never smoked.

Her mom outlived him by nearly 10 years and did not have cancer.

IOW, you just don't know, but it is entirely possible it might not have made much difference either way.