Answer:
The answers are the limbic system and emotions and memory.
Step-by-step explanation:
The limbic system is responsible for processing memories and emotions. The sense of smell activates this part of the brain, that is why it is more likely to trigger those traits. Randolf has a childhood flashback triggered by the smell of the baked pie, that activated his limbic system. The structures responsible by this process in the brain are the hippocampus and the amygdala.