I am also a definite no to smoking on the train. However, back in 1972, I took my first out of state trip from Waldo, FL to Fayetteville, NC (changing in JAX) when I was young and a smoker. There was a "women's lounge" on the train to Fayetteville where smoking was permitted. I recall at the time thinking that the lounge was very comfortable and a very "cool" place to congregate. Thinking back, this was an awful set up. Any woman that wanted to use the restroom had to walk through a thick cloud of smoke to use the facilities. Yuck!! I have been a reformed ex-smoker for about 35 years and cannot stand the smell of smoke.
I find it very uncomfortable when smokers stand near the doors of the train during the "fresh air" breaks.