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.
National Geographic ran a series of experiments with sharks and divers to debunk several shark-related myths. They placed 2 divers in water, one holding a bottle of urine that slowly seeped into the water and another diver, in a separate area, without any urine: Experiment Result: No reaction from sharks.