Of all my bad habits, I've never picked up the smoking one. Perhaps it's because my parents smoked when I was very young. The smell of smoke brings back memories of being car sick; They would often drive while smoking with the windows up. My parents quit soon after the surgeon's general warning in the 70's. They quit cold turkey. One day they were smoking, the next they weren't. I've never really asked them how or why this happened.
From then on, the only time I smelled smoke was when my aunts and uncles came over. The smell of smoke in the house always was the scent of company. The fact that all my aunts and uncles never lived past 75, while my parents still alive in their mid-80s seems to back up the surgeon general's health claims.
Currently, I'm dealing with my neighbor's smoking habit. Her cat has asthma, which her vet told her was caused by her 1 1/2 pack a day habit. Since her cat is the whole world to her she's decided the best thing to do is to no longer smoke in her house. So she's been smoking in the hallway, outside my kitchen door, so I'm now benefiting from her smoking.
Since she's 75, it's difficult to tell her to stop, but I struck a deal where she can't smoke in the evenings when I'm home, but only when I'm at work. She said something about smoker's are losing their rights and I suggested as nicely as I could that she go on the patch for her cat's sake as well as her own.