Yecch, tonsil stones...
Before I actually knew what they were, I thought they were coming from my sinuses. I'd feel something that wasn't quite
pain, but would be very uncomfortable, and this nasty little lump would slide onto the back of my tongue. I just swallow those, having no desire to see or smell them, but with one of my first ones I spat it into a tissue to see just what the heck came out of my head. It was like "bad breath plus".
My brother's gotten a couple of those, and he said, "Looks like a bean, smells like *excrement*."
Um, no, it doesn't. Smells worse than that, in my opinion.