I don't doubt I'll get tagged at some point, but honestly I can't see my ball Naga doing it. She's super relaxed and I feel like I'm pretty good at reading snake body language. I also make sure to wash my hands before and after handling dead mice. If she starts to get tense, I back off and go slower, or leave her alone.
I have only had my girl a few days, but I've handled several snakes since I was a kid and I've never been bitten.
*knocks on wood*