So in Firefight, we get inroduced to an Epic named Sourcefield, and her weakness is shown to be when she consumes kool-aid. An Epic's fear is derived from their fear from the pre-Calamity time. With Sourcefield, her weakness is consuming kool-aid, and she gets this fear from when her grandparents poisoned her kool-aid when she was in her youth. However, it wasn't exactly her kool-aid that was poisoned, it was another generic drink similar to it. So is it possible that her weakness is consuming any drink similar to kool-aid or maybe being her consuming any drink that she believes to be kool-aid?