Turning down a dance?

I need some advice. There is a man on my local scene who started showing up again the last couple dances. He repeatedly asks me to dance and then doesn’t actually swing dance but wants to sort of hold me and sway. Last night he pulled me close and started breathing in a way that was disturbing. I re-established a frame to create space. I’ve been dancing for 24 years and old school etiquette is to not turn down a dance unless you have a valid reason and then ask them to dance later. I feel like I can’t get away from this guy. Last night he probably asked me to dance 5 or 6 times. It’s making me not want to be there and this is my favorite hobby. What is the best way to tell him I really don’t want another dance with him?