Hi Debbie,
Thanks so much for your question, and I'm so glad you are reaching out on behalf of you and your husband. While you may get more feedback from community members on personal experience, I thought this article might be of interest to you and your husband, too: https://copd.net/news/stem-cell-therapy/.
I thought you might also like to know that others in the community have asked about this as well - you can find her question as well as a response from one of our moderators, who is a long time COPD'er, here: https://copd.net/q-and-a/stem-cell-benefit/.
Please do come by any time.
Best,
Jenn (COPD.net Team)