Minor bug you can sell tenebrium items to vendors and they will get infected with the rot most cases that would make sense, though why would a human merchant handle the stuff if they knew it would infect them.
Hortun (merchant at entrance to hunter edge) is undead, therefore should be immune, but still gets the rot.
Not really a big deal since the rot won't kill them but in the interest of continuity and completeness.
Best way to set it up would be to have only certain merchant be able to trade in it. Like the Goblin merchant in sacred stone (doesn't get effected by rot btw) and hortun who is undead.
