Stinky tofu is a special kind of food, which will give off a strong smell during fermentation. This smell comes from chemicals produced during fermentation, not feces or any excrement. The production process of stinky tofu includes fermenting tofu to produce special flavor and fragrance. Although the smell of stinky tofu is unique, some people will find it difficult to accept its smell, but this does not mean that it contains excrement or any unsanitary ingredients. Under normal circumstances, the materials and techniques for making stinky tofu should meet the food safety and hygiene standards to ensure food quality and safety.