Despite advances in research, some aspects of the human body remain a mystery. One recent study suggests that humans can sense when death is approaching. When someone dies, the body releases putrescine, a foul, toxic scent from decomposition. Humans seem to subconsciously recognize this odor, prompting an instinctive response to move away,

similar to how animals react to danger. Researchers Arnaud Wisman and Ilan Shira found that, like animals, humans avoid this scent, even though we’re not consciously aware of it. This reaction is part of our survival instincts, though we don’t link the scent to death or fear directly.