The smell of canned herring is an ubiquitous and persistent stench. The reasons why canned herring stinks are as follows:

1. Herring is a kind of marine fish with a bad smell.

2. In the production process, only the processed herring is canned and allowed to ferment naturally. After long-term fermentation, a delicious food with a foul smell and a sour taste will be formed.

Because the canned herring is really smelly, you must pay attention to the following matters before eating

1. Before opening the canned herring, you must inform all the people around you to avoid accidents.

2. Don't open cans in a closed environment, otherwise the consequences will be very serious.

3. Before opening, it should be refrigerated in the refrigerator to reduce the internal air pressure. If it is opened at room temperature, a large amount of liquid may be sprayed when opening, which is difficult to clean up.

4. It is forbidden to take this kind of canned food on the plane. Once the canned food is broken due to air pressure, it may cause potential safety hazards.

5. After enjoying the perfect food, remember to seal the cans before discarding them, so as not to affect the city appearance and environment.