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The smell of malice

15.10.2020

The smell gives information about the freshness of the food, and disgust means that the food is unfit for food. Following the same principle, pain protects the body from serious injury, such as causing a person to pull their hand away from a hot iron. Psychologists believe that these types of survival reflexes can also be triggered in response to other people's bad behavior.

A research team at the University of Geneva (UNIGE) found that unhealthy behavior triggers a brain response similar to that of a bad smell. "These connections have been demonstrated through associations between situations and sensations," says Prof. Corrado Corradi-Dell'Aqua, a researcher in the UNIGE Department of Psychology and lead researcher of the study. "For example, if I drink something while reading an article about corruption, which affects to my moral judgments, I may find that my drink smells bad and tastes nasty. The opposite is also true: smells can generate inappropriate moral judgments. If someone smells bad, other people tend to consider them unhealthy."

Scientists consider this discovery very important for psychology. Their observations also led to the development of a prototype olfactory aversion biomarker. "It's a double step forward!" concludes Professor Corradi-Dell'Aqua.

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