Yes, but only a few hours a day when I'm having trouble breathing from moving around.

Yes. Mine isn't from a nebulizer, mine is from 02 usage. Do you use 02?

I wake up in the morning with chapped lips, but I'm sure it's from breathing through my mouth during the night. No problems during the day.

Yes, I do have chapped lips using oxygen. I just used chapstick all the time.

Do you use the nebuliser regularly, I can't give you an answer, because my copd is well managed, and only use nebuliser when I have a bad chest infection.