Why does my nose always itch whenever I play my trombone?

Question:

Why does my nose always itch whenever I play my trombone?

I'm serious. It always itches and drives me crazy. It's like the nosehairs are vibrating or something... How do I get it to stop?

Best Answer - Chosen by Asker: Well it is because the vibration of your lips moves up to your nose. It is a good sign, it means you are using the correct ambeture. It will take time, but you will eventually get used to it.