How can we detect that food is spoilt?

Food can be detected as spoiled through several indicators, including changes in smell, taste, and texture. A sour or off odor, unusual discoloration, or slimy texture are common signs of spoilage. Additionally, the presence of mold or an unusual appearance can indicate that food is no longer safe to consume. It's always best to err on the side of caution and dispose of any food that shows these signs.