[Ditter]

Bogey for every non smoking relative that you name, I & every non smoker or former smoker can name 10 of our relatives who were smokers & were killed by it. My mother-in-law smoked unfiltered camels for 45 years & developed oat seed (or oat cell) carcinoma & was dead in 3 months. I'm sure you don't want to hear about the others, but I can go on & on.

[Madame Dufarge]

I & every non smoker or former smoker can name 10 of our relatives who were smokers & were killed by it.

When you're "embellishing" to make your case, you should at least make it plausible.

[Bogey]

Where I disagree with you is not mentioning the rate of lung cancer in non smokers. There are plenty. Autopsies aren't even performed for lung cancer unless your a smoker.
My mother in laws would have never been even looked for if other complications hadn't arisen.
She was as furious as we were. This is shoddy medicine, and I'm sure there are thousands of undiagnoised lung cancer cases in non smokers.
Last but not least, lock yourself in your garage with your car started for about 60 minutes.
You honestly think auto emmissions play no effect on lungs.
As I said before, my mother in law was an avid runner with lung cancer. Her doctor said she's not the first runner he's seen it in. Where do you think they got it?
Sadly, more will die like her. Why? Because blaming lung cancer solely on cigarettes doesn't inconvience the masses into parking their cars.