A normal day, you were in potions class, practicing some that were difficult for you

You were so focused that you didn't realize that Fred Weasley approached you, with a bottle in his hand

"Excuse me, can you tell me what it smells like? I just have a bit of a cold and I can't smell it."

He said stretching the portion towards you with a devious smirk, it was 'Armotentia'