What does copper do when it's in your nose?

I went to visit my doctor the other day because my nose kept on bleeding. So he just pulled out a stick, and marinated it in copper (he said it’s copper) and shoved it up my nose. I asked “what does that do?” He responded, “oh it’ll make you high. pause it’ll stop your nose from bleeding you retard what do you think?”

So I didn’t bother asking more, but would still like to know. I can’t find it on Google cause I just end up with “copper nose” which is something completely different.