I have asthma, my 6 yr. old has it too. Both of my grandparents died from COPD. My grandpa didn't smoke, but my grandma did - heavily. It got them both.
My Mom and other grandma (Mom's Mom) also have COPD and asthma. My aunt and my brother also have asthma. Another thing we all have in common? Yep... we all smoked at some point. However, my brother and I had asthma before we smoked. But we lived with a smoker.
It's stupid and I have every reason in the world to not smoke, but I still crave it. And I only smoked for a couple years! I started smoking because if stress. The minute I'm stressed, I get the cravings something horrible!
Anyway, what helped me the most was sunflower seeds. You can do it... just find what works for you!