When an animal dies , a foul odor comes out of its body. The reason for this smell is putrasin. This putrecine is made from a chemical reaction caused by the breakdown of fatty acids in the tissues of the carcass. According to a new study , understanding this smell means anticipating imminent death or danger. Researcher and psychologist at the University of Kent. Arnold Wissman and part-time professor of psychology at Arkansas Tech University. "Preliminary results from the study show that the production of certain chemical compounds, or putrasine, is a threat ," said Ilan Sreera . All the evidence so far shows that all such chemical signals are sweaty. Talking about the results of the study, Dr. Medical Daily. Arnold and Dr. " We don't know why we like or dislike someone else's body odor ," Ilan said . We don't even know how scent affects our emotions , actions and behavior. We can't even begin to imagine how horrible the smell can be. ' Although in the animal kingdom , odor is the most important factor in survival. Studies have shown that putrasin gives a kind of chemical signal , from which the animal can understand which area it should abandon or avoid. In the same way, people can avoid danger. The researchers explained that putrasin warns us , helps us to avoid any danger or advises us to flee . From the results of several previous olfactory studies, Arnold and Inner ask , "Does putrasin create a warning behavior in humans ?" For this they did some tests. Participants in the experiment consciously or unconsciously disclosed the matter of putrasin. The researchers compared the two groups by observing participants' behavior. Some participants were asked to pick one of the three types of scents. These are putrasin , ammonia and water or without any odor. Participants are then allowed to read about a foreign student. Where those students are harshly criticizing their own value system. At the end of the reading, participants were asked to evaluate the student. At the time , students who smelled ammonia and water were more likely to be rebellious than those who smelled putrasin. From this it is understood that the consciousness of coping with the situation is created in people because of putrasin. Since the participants in the study were not familiar with the odor of putrasin , they could not predict its relationship with death or danger. In addition, research has shown that they can detect odors through the brain. But when death or danger really does occur , the nose becomes much more active than the brain. And that's when people became aware of the smell of putrasin and became wary of fighting or fleeing.