What does Dunny associate with the scent of Chanel Number Five?

Dunny associates the scent of Chanel Number Five with Mary Dempster, who is a central figure in his life and a significant influence on his personal development. The perfume symbolizes Dunny's complex feelings toward Mary, as she embodies a mix of beauty, grace, and a certain otherworldly presence that captivates and haunts him. The scent evokes memories and emotions tied to her, emphasizing the depth of their relationship and the impact she has had on him throughout his life. This connection reflects the overarching themes of the novel regarding the intertwining of reality and the metaphysical, and how pivotal characters shape one's identity and perception.

The other options, while they may represent important women in Dunny's life, do not carry the same level of emotional resonance tied to the Chanel perfume and its connection to a formative, life-altering experience.