Geralt: Go away.

Jaskier: I won't be but silent back-up. Look, I heard your note, and, yes, you're right, maybe real adventures would make better stories. And you, sir, smell chock-full of them. Amongst other things. I mean, what is that? Is that onion? It doesn't matter. Whatever it is, you smell of death and destiny. Heroics and heartbreak.

Geralt: It's onion.