Naah. I've had this happen before with my own cooker and my own forgetfulness. Just use soap, hot water, and a sponge as normal. If you're totally squicked out you can clean it again after it dries just to be sure, or use bleach. If anything's left, it'll be killed by the heat the next time the cooker's used.You clean it by throwing it out and buying a new one. These women, I have no idea how they survive.