I use a CPAP also, and try to use distilled. If it's not available, I'll use purified bottle water (reverse osmosis), such as Dassani, Aquafina, and Nestle Pure Life.
I'll be staying for a week, and in a week I use about a half gallon of water. That comes out to about 4 bottles of water. I plan on packing four water bottles that seal really tightly with distilled water and pack it in my checked bag suitcase. I'll put them in a plastic bag, and tie off the end, in case it leaks a little.
If there's a water disaster

, I'll just have to put any wet clothes in the dryer that night

, not a big deal, and buy Dassani. But, I'm sure the water bottles will survive (after all, shampoo and conditioner make it, and those caps aren't nearly as tight as water bottles).
My problem is that with the CPAP I like to have a white noise machine. For some reason, I have trouble sleeping when my breathing makes me sound like

Any ideas what I can use for white noise? (at home I have a large fan blowing in the room that is quite loud).