"Oh, you weren't exaggerating when you said gross," the Doctor comments, though he seems more amused than bothered. He would have had to get out of his friend's body somehow, and sneezing isn't quite so bad a way to go, when you think about it... "And anyway, I'm very smart, and I run into things I don't know all the time. Being willing to try anything's just as useful, in the long run. Though being smart certainly never hurt..."