I'm a smoker.
(if you didn't already know, hee hee hee)
Besides nicotine, cigarette smokes contains hundreds of other chemicals that are horrifying. Cyanide, co2, and so on and so on and so forth.
In an interview over the internet, this lady asked..."How does it feel?" [to die from lung cancer]
The patient: Take a deeeep breath. Then sip in some more air. Then sip in some more. Try to hold that and breathe at the same time. You can only take it tiny, tiny puffs of air. That's how it feels.
Don't start. It's not cool.