Hi CindyLooWho-
Thanks for your question! While you may get feedback from other members of the community, I wanted to respond as well. There are several possibilities for why a person could be out of breath despite being on oxygen. I thought this article which discusses it could be helpful: https://copd.net/answers/sob-and-supplemental-oxygen/. I hope this proves useful! We also encourage anyone experiencing this to check in with their doctor, if you haven't already, to be on the safe side.
Best,
Jenn (COPD.net Team)