Don't worry about it
. It's what we're here for.
That kind of attitude reminds me of a student at my old karate dojo. He was a nice guy, but when he was pissed, he would let it out... all over your body during the technique.
Basically, if it's a one night thing, let it go. If it persists, tell your sensei about it and let him talk to the sempai about it.