I quit smoking about 9 and a half years ago, and it was the hardest thing I ever did. My no-longer paralized respiratory system decided it was allergic to cigaretts, and for the first time, I actually had separate reactions to irritants in my environment, so I could tell when I was reacting to something. It's harsh, and I feel for you. Keep it up. It will get easier, and the allergies may get better.
About the cat: Are you SURE it doesn't have mites that are biting you? Maybe you're not really allergic to it (but maybe you are--your story just reminds me of another itchy person whose cat had mites.)
For relief, I recommend a long, hot shower. :)
Best wishes!
K |