I had to have a nasal probe inserted into my sinuses several years ago. That remains the single most unpleasant medical experience I've ever had.
Unlike a colonoscopy, they don't put you out for a nasal probe or give you any kind of local anesthetic. The sensation of something the size of a marble traveling all around my sinuses is one I don't ever want to repeat. It's like an itch you can feel, you know where it is, but if you scratch it, it doesn't feel like you've quite gotten it, so it kind of messes with your sense of reality while it's going on - a sort of "I can feel something on my face...but there's nothing on my face." - that's because it's
under your face. Things aren't supposed to be under your face, you know?
If I think about it, I can still conjure the exact feeling of that thing going along the topside of my gums, like I could feel it stimulating the roots of my teeth. Think about that for a minute...
All the while, I was watching this guy feed more and more tube up my nose...another inch...another inch...another inch...and it was like a surreal magic trick, like, "How's he doing that, because there's no way all of that is fitting up my nose!"...another inch...another inch...
I don't know if it's related, but ever since that appointment, I can squirt stuff out of my right eye. They used to have a guy on TV when I was a kid who would drink, say, a glass of milk, and then he'd squirt milk out of his eye. I can do that.
Obviously, I'm not in the habit of squirting whatever I'm drinking out of my eye, but it does cause an issue because I can't really give my nose a good blowing if I'm congested, because it'll send some of it out of my eye.