What is a common sign of food contamination?

A common sign of food contamination is food with an unusual odor. When food becomes contaminated, it often experiences changes in its chemical composition, leading to the production of off-putting smells. These unusual odors can indicate that the food is spoiled, has undergone bacterial growth, or contains harmful pathogens. Recognizing these odors is crucial for food safety, as consuming contaminated food can lead to foodborne illnesses.

In contrast, food that is visually appealing may still be safe to eat, even if it has been improperly handled or stored. Properly sealed food provides a barrier to contaminants but does not guarantee that the food inside is safe. Likewise, food at the appropriate temperature is essential for preventing bacterial growth, but it does not necessarily indicate that the food is free from contamination. Thus, detecting unusual odors is a key indicator for identifying potentially hazardous food that should not be consumed.