"It's fortunate that a bubblehead charm keeps airborne diseases out too, really," said Laura Madley from inside the near-transparent spell dome that still, to Natalie McDonald's eyes, looked like nothing so much as an upended goldfish bowl. "It's not just for stink pellets and dungbombs in the corridors anymore! Best get your own charm going just in case, and then I know you said something about Lavender Brown and Padma Patil both sending over information about useful medicinal herbs; not that they'll cure this horrible thing any more than that Muggle stuff - para somethingorother, I know that much - or a pepper-up potion cures a hangover, but if it helps, it helps, you know?"