How does nose mucus produce so quickly?

Seriously, I have wondered this over the years and have yet to find out the answer. Most of what I find is on how the nose works and different decongestants.

I’m wondering how nose mucus (snot) produces so quickly. I know our body’s need mucus for various reasons but I don’t understand the mechanics involved. I could be blowing my nose for days ..constantly. How does my body create that much mucus in such a small area so fast?

I have several olfactory type allergies so I deal with this alot ..lol. I would think all that overworking would cause nasal problems after many years.