Ellura had heard the first question as Professor Lafay started class after returning everyone's greetings. Noxious...there were a few things that came to mind. However before she could really speak to answer, her fellow classmates were already speaking up to supply their own thoughts. So in the end, the third year remained quiet...for now. And when they moved on, she finally raised her hand to supply an educated guess to the latest question.

"I'm not familiar with the potion, Professor," she admitted seeing as she wasn't really familiar with many potions. "But perhaps its supposed to make one sick or believe that whatever the person smells is noxious-smelling." Sounded like a good as guess as any.