Question

jennifer normally experiences a flood of romantic feelings whenever she smells a particular cologne because it reminds her of her boyfriend. Thankfully, when her younger brother wears the same cologne, she does not experience the same feelings. This is an example of

Answer 1

This can be an example of nostalgia. (Nostalgia is a sentimental longing or wistful affection for the past, typically for a period or place with happy personal associations according to Oxford Dictionaries)