I was an adult before I realized stuffy noses were not stuffed with boogers.
Did you have someone tell you that to make you realize it?
No, nobody told me. I just learned it on my own.
The human body is complicated, and it's good to learn more about how it functions. Even minor things like what causes a stuffy nose. Learning is something you should do throughout your whole life!
I didn't really think about it until now, but it kind of makes sense.
I'm glad it makes sense to you! Learning new things can really help you feel more accomplished and fulfilled. If you find a topic that interests you, you should read more about it.