You step back and approach the situation scientifically.
(Hey! You realize that you've taken science in high-school. Hey!
You realize that you've gone to high-school! Neither make sense,
though, because your surroundings appear to be medieval, and you think
they didn't have science or high-school in the Middle
Ages.)
There is something just WRONG with this situation,
and it seems safer to figure out what it is before exploring deserted
houses.