Just imagine the stinkiest taste you know about and multiply it by 1000 and mix it with rotten onions and your smelly breath, yes all this makes ideal Surströmming (fermented herring), the Smelliest food on palnet earth. Surströmming is a traditional fish delicacy in Sweden that is fermented in barrels for a couple of months, then put into tin cans for up to another year. You should open the can under water or outside of your home.
It takes many days for the stench to fade once the tin is opened. Some Swedish towns don’t allow it to be opened in houses, many airlines won’t allow it on flights, even with the tins unopened.
According to a Japanese study, a newly opened can of surströmming has one of the most putrid food smells in the world, even more so than similarly fermented fish dishes such as the Korean Hongeohoe or Japanese Kusaya.