What type of HAZMAT includes items that produce odors when mailed?

The correct response is perishable matter. Perishable matter includes items that are living or have a limited lifespan, such as food, plants, or organic materials. These items can produce odors as they begin to decompose or spoil during shipping.

Understanding the nature of perishable materials is essential for postal workers because these items need proper handling to prevent spoilage and ensure that they do not create unpleasant smells that could affect other packages and services. Perishable items often have specific restrictions on shipping methods and delivery times to maintain their freshness and prevent any adverse effects during transit.

In contrast, flour and other flammable materials are more focused on safety and risk of fire. Prohibited items refer to anything that cannot be shipped at all due to legal restrictions, and undeclared hazardous materials pertain to items that may pose a risk but have not been properly identified. These categories do not specifically pertain to items that produce odors when mailed, making perishable matter the appropriate choice.