"Werewolves are weak to silver"
Pah. This is BS. They are strong to everything else. There's a difference.

Take say faeries, who are properly weak to iron. You ask them to handle a cast-iron pan or a steel chef's knife, they can't do it.

But werewolves? Ask them to eat with your silverware, they might look at you odd, but they're fine.

Granted, stab them in the eye with your silver steak knife (you weirdo. who has those?), they'll have a bad time. As would a normal human. Or faerie.