"Good question," Severus muttered abstractedly as he thought it over, "I can't recall an instance, though I'd have to search the literature to be sure. It does seem an obvious baseline comparison to make.
It increases the size of the group of people needed to experience the same trivial event and donate it, to three or four: A blind and/or deaf person, an average person, and a werewolf." He spoke with the businesslike crispness that said that he was already drawing up detailed research protocols in his mind. Thus absorbed in his own thoughts, he'd already straightened up out of his former overwhelmed huddle: he was even breathing almost normally. Only the occasional wince or scowl betrayed his reaction to a particularly pungent seaside scent - a distant hint of old seaweed or stranded jellyfish.
Abruptly, he declared, "If you don't mind, I think I've seen enough for now." He dissolved out of the memory, and in the world beyond the pensieve, he straightened up, seizing a notebook and starting to scribble, illegibly to anyone else and with furious speed.