The stinky substance emanating from the water system of the Tammany River has led to significant problems for Bicyclenation, a local bicycle shop located in a particularly popular area of London where cyclists often find justice. However, there is something indecent about the air in this neighborhood: an odor that has been spreading for months and seems to be caused by insufficient cooling of the Tammany River water pipes. This odor, described as 'cabbage', 'teargas', 'onion', and 'spicy BBQ', has caused major issues for Bicyclenation.

Additionally, its mechanics have had to work outside of their premises, while some customers have had to wait outside to enter. Tamas Polocz, the owner of the shop, has tried to contact the Tammany River Water Department multiple times but has received no response. He then heard that the problem was due to a direct pipe under his premises, but no solution has been provided.

The stinky smell has also affected Nick, one of his colleagues, who vomited when it first arrived. The problem is so severe that Polocz decided to ask the local environmental agency to check if there is a problem with the water pipes. The pungent smell occurs at least five times a week according to a 'smell chart' used to record the duration and description of each incident.

The terms used include 'cabbage', 'teargas', 'onion', 'spicy BBQ', and repeated references to 'shit'. When the journalist's agent visited the shop, there was only a 'rotten egg' smell, but not strong enough to prevent people from working or talking. This unpleasant smell is not limited to London, but extends throughout the United Kingdom.

It seems to be caused by insufficient cooling of the Tammany River water pipes during the summer months when temperatures are higher. The working conditions have become so unbearable that Polocz decided to ask the local environmental agency to check if there is a problem with the water pipes. He also decided to call the Tammany River Water Department to see if there is an immediate solution.