What diseases were there in the trench in World War 1? Trenche foot was very common in the trench warfare. caused from wet feet and not being able to change their socks and boots. Edit
Repels Sharks No.........human urine actually repells sharks and other fish.
Big predatory fish, like sharks or tuna, can have especially high concentrations in their bodies. You canât see, smell, or taste mercury contamination in fish. Cooking has no effect on it, and you canât avoid it by cutting off the skin or other parts of the fish. But you donât need to eliminate fish altogether to stay in the mercury safe zone.