Ja, smoking is a no-no.
My ex-gf is a smoker and she was starting to get those wrinkles around her mouth, like a cat's anus. It's no good. Your clothes stink, the house stinks, your fingers are yellow and kissing a smoker is like kissing an ashtray.
But the worst thing is what you can't see: atheromatous plaques. Ja, I have seen those first hand. A vascular surgeon pulled those out of a guy's leg in theatre in front of me. When he handed it to me it looked like a long bleached booger and it was of a rubbery texture. That is what was coating his arteries. Get that build up in your coronary arteries and one day it could be unexpectedly 'Game Over'
So all the best wishes in quitting. You'll be much better off and you'll be able to climb a staircase without wheezing at the age of 65.
If I could nuke all cigarettes I would do it. Sometimes I think Dennis Farina's quote in 'Snatch' is the best. He was in a restaurant and someone at the next table was smoking. He got up and said to the guy "If you agree not to smoke I'll agree not to come over to your table and fart while you are eating"
Sums it up nicely.