Both "The Price of a Smell" and "The Lying Contest" are short stories by Roald Dahl and their topics are related to human behavior and the consequences of actions.
In "The Price of a Smell," the main character, an elderly woman named Sophie, is willing to pay a high price for a certain perfume that reminds her of her youth. The story explores the power of memories and how they can influence human behavior, as well as the consequences of being willing to pay any price for something that is important to us.
In "The Lying Contest," the main characters, a group of schoolboys, engage in a competition to see who can tell the most believable lie. The story examines the nature of lying and how it can affect interpersonal relationships, as well as the consequences of engaging in dishonest behavior.
Overall, both stories deal with themes related to human behavior, such as the power of memories, the consequences of our actions, and the nature of lying.