Linda, I'm not sure if mold is one of the symptoms of copd, but I have tried several different remedies for copd on this site with varying results over the last 2 years. Much of it was very helpful to me including the use of 3% hydrogen peroxide spray, according to Bill Munro, along with a 1:1 ratio of 3% H2O2 and distilled water in my nebulizer.
Having a lot more summer humidity this year my breathing got worse and often needed to use my rescue inhaler. Last month I did some research and found out about yamoa powder which I am using with excellent results within a short period of time and breathing much better now. I wish you the best and hope you find a remedy that works as well. Not being able to get a decent breath is very scary.