This doesn't actually sound that dangerous for him. Potential side effects aside, but the worst that's happened to him so far is temporary pain and lingering emotional distress.

"Fiiiine, get outta here, then! I'll walk around and try to look extra tasty, and you try not to fall asleep! I don't want those things slurping into my brain again!"

Even in sixteen years, there are plenty of memories he doesn't want stolen or blasted all over Town. Of course now he's thinking about everything that he doesn't want people to know about.

Mithrun seems like the kind of guy who has never done something that got him slapped by an angry girl in his entire life.