How does Paticcasamuppada or 12 Links of Dependent Origination relate to Aversion?
Aversion is simply the disliking of an experience. When a person gets angry, sad or afraid, it is the craving to be rid of the experience that is going to lead to clinging. Not aversion itself. It is called Vibhava-tanha. Hence aversion isn't considered a direct cause of Samsara.