How do you know he was not, usually. But he had lain down for a nap, so the machine might not have been assembled for use yet from his luggage.
I use one and I don’t lay down for a nap unless I’m wearing it. It’s my little sleep buddy these days. I know I won’t sleep right unless I wear the mask. One goes with the other.
You could be right; I guess I give the benefit of the doubt he would take the time to plug the machine in and put the mask on.
I think his death was suspect.