What are substances added to spoiled food to disguise its spoilage?

Substances added to spoiled food to disguise its spoilage are specifically intended to mask the signs of deterioration, such as off-odors, strange textures, or unusual colors that indicate the food is no longer safe to consume. This practice is unethical and poses significant health risks, as it can mislead consumers into believing that the food is still good.

This answer encapsulates the intention behind these substances, which is to cover up indicators of spoilage rather than enhance or preserve the food in a manner that would make it safe or improve its quality. Other options may involve food enhancement, preservation, or appearance improvement, but none focus specifically on the act of disguising spoilage as the correct answer does.