The film "Sanitation: Why All The Fuss?" emphasizes the critical importance of sanitation in food handling for public health. It explains how bacteria, which can multiply rapidly and cause illness, are often transferred by people, pests, and contaminated tools. To prevent foodborne illnesses, food handlers must adhere to strict hygiene practices, including frequent handwashing, maintaining proper food temperatures, and ensuring cleanliness in food preparation areas. The film highlights that while heating food kills bacteria, it does not eliminate toxins that may have already formed, making prompt refrigeration essential.