Hang on let me get my silly lore document. Actually no I don't I know what it is it's garlic bulbs, partly 'cus that started as garlic flowers, anyway...

Simon isn't weak to garlic bulbs like modern media likes to use, though I've kept it in the sense of "you can smell blood and boy howdy is garlic one hell of a strong smell."

My favourite silly perk is always going to be Bram Stoker's concept notes of "Can tell if dead — sees man seemingly dead says ‘no’"