Did anyone, or does anyone, use a humidifier? Would this help? My husband is just starting to get heavier mucous after three weeks of treatment, and I think it scares me more than it bothers him. He goes to sleep before I do and last night he was laboring so hard to get good breaths in his sleep - and loudly. I was afraid to leave him alone to go sleep in another room, because he might choke in his sleep (tho probably not) and I was afraid to go to sleep. So I took a sleeping pill, and we both woke up in the morning! I guess I shouldn't worry quite so much -I'm not really a worrier by nature, but I am afraid he'll choke in his sleep. Is that a silly concern?