1. Canned herring: This is a traditional Swedish food. Its production process is to put the processed herring into a can and let it ferment naturally. The biggest feature of canned herring is that it is ubiquitous and continuously stinks. Some people describe its smell as 300 times that of natto, and some even say it smells like ten bags of salt. The Swedish government even stipulates that it is not allowed to open canned herring in residential areas.

2. Stinky tofu: This is one of the traditional snacks in China, which has the characteristics of "smelly smell and fragrant taste". In some areas in the south, it is called a smelly child. Although its name doesn't sound elegant, its taste is the favorite of many people.

3. Preserved eggs: also known as preserved eggs, preserved eggs, and gray-wrapped eggs. , is a traditional egg product in China. Although it is deeply loved by consumers in China, this kind of egg that smells like sulfur and ammonia (urine) is called "devil's egg" by many people abroad.