My partner and I have both quit smoking - my partner last year and me this year (about 1 month ago now).
But neither of us have experienced any of the supposed benefits of stopping smoking.
Things do not smell or taste any different, my partner is still wheezing (in fact more than when smoking) and I've never felt so ill in my life. I've broken out in spots and have had a nonstop cold for a couple of weeks when I've never had a single day sick beforehand.
To be honest the only reason I stopped smoking was because of these benefits - money wasn't really an issue for me.
If things carry on the way they are I'm just going to start smoking again.