In some fanfictions, Hermione might create a love potion herself as part of an experiment. But things go wrong when the potion has an unexpected reaction. Instead of creating a normal love - inducing effect, it makes everyone in Hogwarts who smells it become obsessed with knowledge. Hermione then has to find a way to reverse the potion's effects because the sudden thirst for knowledge is causing chaos in the school, with students ignoring their other classes and teachers unable to control the situation.
Another scenario might involve an old, forgotten love potion in the Hogwarts castle that Hermione stumbles upon during one of her research expeditions in the restricted section of the library. The potion activates when she touches it, and she starts having dreams about a mysterious figure. She becomes determined to find out who this figure is while also trying to keep her condition a secret from her friends. As she delves deeper into the mystery, she discovers a long - lost love story that has some connection to her own family history.