Mine will be Oxygen.

What you said about your husband is what I am worried about. My best friend is 70 and she can't get use to hers. The night they did the sleep test everytime the machine made that noise when I breathed in my body jerked everytime. First I started out with one that fastens around your head and goes into you nose and it hurt my nose as I said but even with the mask I jerked everytime. I am worried about getting use to it.

Thanks for the help.
Ada