Well at least she had been pretty close to the mark. The mention of the noxious potion brought a few memories up but they were too insubstantial to even try to remember. It didn't take a genius though to take a good stab at what it was. From what she did remember though it was a relatively hard one to make.

"Professor the fact that it's called noxious could explain what it does. It probably renders the drinker great harm or discomfort."