Thank you for your reply. I’m not particularly immune compromised , but have over my lifetime had many many pneumonia and bronchitis episodes. I’ve been hospitalized for pneumonia at least 4 times in my lifetime, most recent was 2018. I do believe I had pneumonia last year. It was one bronchitis attack after another from October through February.
Also, I have an Omron nebulizer which I sent back to them after 1st use when it didn’t seem to work. They sent it back saying it was fine. Perhaps there’s a better product out there somewhere that may work better.