u/Alone_Egg1537

I’m asking because a friend of mine seems to struggle with this despite what looks like decent basic oral hygiene. I don’t want to assume anything or make them uncomfortable, so I’m trying to understand possible causes first before saying anything.

Are there common things people often overlook, like tonsil stones, dry mouth, diet, stomach issues, or other health or hygiene factors, that could be contributing to it? Any insights or experiences would be really helpful.