In Book 10, How did Circe "Welcome" the men who were sent to reconnoiter the island?

Odysseus and his men travel to Aeaea, home of the beautiful witch-goddess Circe. Circe drugs a band of Odysseus’s men and turns them into pigs. When Odysseus goes to rescue them, Hermes approaches him in the form of a young man. He tells Odysseus to eat an herb called moly to protect himself from Circe’s drug and then lunge at her when she tries to strike him with her sword. Literally, I can't think of any soldiers turned into pigs by a really hot witch. Come to think of it, I can't think of a metaphor or allusion either. I'd love to know if you find out though!