There maybe some truth to this, but on the other hand, yogurt which has dairy is actually good for improving your immune system which can make you less susceptible to sicknesses that cause congestion.
If you haven't used cpap or bipap in a while due to discomfort, make sure you let the sleep doctor know this and they can try other masks.
stop snoring bite guard
Snoring can cause sleep disruptions for the person who snores as well as anyone that has to share a room or bed with them!