A funny video with some guys that got a smelly gift.Do not try this at home or any place indoors.Surströmming is Swedish cuisine and is fermented Baltic herring.The fermentation starts from a lactic acid enzyme in the spine of the fish, and so the fermentation is by autolysis; together with bacteria, pungent smelling acids are formed in the fish such as propionic acid, butyric acid and acetic acid. Hydrogen sulphide is also produced.When opened, the contents release a strong and sometimes overwhelming odour; the dish is ordinarily eaten outdoors. 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.