Have you ever been sick or in some immense pain from an injury?

[He looks dryly at the other, suspecting that not to be the case, especially given how they talk about humans.]

Especially if they aren't accustomed to it, or think it might mess up their plans for another day. Most of my housecalls are for nobles. They get upset when I tell them the best way to get rid of their cold is a few days rest.