leavemealonenub

I am making a mod that is supposed to have items that should only be accessible to the standard variant of every race. like a breton or a khajiit could pick up or equip the items, but if the game classes them as a vampire or werewolf variant, the items become useless/hidden. I want the quest line I plan to develop to be hidden if the player is a vampire or werewolf, and I want the items to be useless if they are obtained somehow.

I am new to modding with the Creation Kit and am wondering if there is a way to make items unusable by vampires and werewolves. All help is welcome, even if it is to tell me it isn't possible.