Some people do have difficulties with some vegetables like cabbage and beans, others react badly to carbohydrates and others to smoked meats and cheese. You really just have to pay attention and when you find something that doesn't agree with you, make a note. Many people with COPD find that six small meals works better for them than three large meals, and some simply graze all day. You really have to find out what works for you and stick with it.

That’s me I do better nibbling throughout the day then one big bulk meal

I've read to avoid anything gaseous like cabbage, beans, etc.