First, Airbnb cannot charge the host since payment is already released in #2. It's not even clear the host did anything wrong. The guest issued the chargeback.

First, Airbnb cannot charge the host since payment is already released in #2. It's not even clear the host did anything wrong. The guest issued the chargeback. Second, Airbnb probably eats the cost of the chargeback since this is an online CNP transaction.