What is an example of a chemical hazard in food?

A chemical hazard in food refers to any harmful substance that can contaminate food and pose a risk to health. In the context of food safety, sanitizer that ends up in food is a clear example of a chemical hazard. This can occur if food-contact surfaces are not rinsed properly after being sanitized, leading to the chemical residue being present in the food consumed. Such contaminants can cause various health issues, making it critical to ensure that sanitization protocols are followed safely and effectively.

On the other hand, the other options represent different types of hazards. Wood fragments are considered physical hazards, as they can cause choking or injury. Undercooked meat poses a biological hazard due to the risk of pathogens such as bacteria or viruses that thrive in improperly cooked foods. Pest droppings are also physical contaminants, which can introduce harmful pathogens into food products. Thus, each of these options falls into a different category of food hazards, highlighting the significance of correctly identifying and managing chemical hazards in food preparation and storage.