My first thought after reading your question is how multi-layered the smoking habit is. It's just not simple.
First off, how many years did you dump extract-of-cigarette down your lungs?
How long have you been quit?
How long have you noticed that your sense of smell got enhanced from when you were a smoker?
I've been quit 88 days and continue to be impressed by smells I had forgotten about or never registered any more.
A fairly ugly 'aha!' moment when you realize it is coming out of yourself.
Lungs are pretty nifty devices for 'respirating' gasses in and out of our bodies, and as smokers, we habitually did some pretty ugly things to them that I'm sure didn't enhance their efficiency....
Well, okay, it was more than one thought...
Hang in there, it *does* get better.
I've smelled worse!