I was making mac & cheese a minute ago and turned the burner on to boil the water. Like an ass, I turned on the back burner where I had put a tupperware (pretty old one too) casserole dish. A few minutes later I smelled something awful. I caught it early but the smell made me nauseous. I've got all the windows open and the ceiling fan going. I'm just worried that the smell might hurt my babies.

Anyone know???