Hi
I have sleep apnea and it does get worse during a cold . I went for a quieter CPAP machine and it has made all the difference in the world however at this time I am fortunate that I got part of it paid for by insurance . The pressure readings on my machine were lowered as I lost some wt. so good for you and your BF that you are going to work on that area. I would encourage him to really consider the machine due to the serious health risks caused by sleep apnea. This of course is the role of your physician to discuss. Have you tried ear plugs? Good luck to both of you.