After having been on CPAP therapy since 1992, last March I had to go with it for 3 nights because I had left my mask/headgear in an enroute hotel. The lack made my days miserable, I really could tell the difference. Happily, that hotel found my mask and headgear and FedEx'd it to me at the hotel I was staying at.
PS, after that, when I got my mask/headgear replaced, I stuffed the old one into my suitcase where it now permanently resides. So if I lose it again, I'll at least have my old, mungy one.
PS, after that, when I got my mask/headgear replaced, I stuffed the old one into my suitcase where it now permanently resides. So if I lose it again, I'll at least have my old, mungy one.