Modest amounts of alcohol improve your sense of smell

How does your sense of smell improve after a drink? It turns out, it's quite good. It's been proven that a small amount of alcohol enhances the human sense of smell. Practice makes perfect, as the saying goes. This also applies to the human sense of smell, which becomes much more effective when trained. Smell has also been shown to improve in people with brain damage or after taking drugs. This suggests that our sensitivity to smells may be suppressed by certain inhibitions in the brain. According to Yaara Endevelt from the Institute of Science in Israel, these inhibition processes can be suspended under certain conditions. To investigate this theory, she used alcohol, which suppresses the inhibition of signals in the brain. She wanted to know if drinking alcohol sharpens the sense of smell. Test one: distinguishing the smell of liquids The first test involved 20 volunteers. They were asked to smell three different liquids. Two consisted of the same six scents, while the last was a similar mixture, but with one aroma replaced with another. Within two seconds, each participant had to smell the liquids and identify which one was different from the others. The experiment was repeated six times, with each batch containing three liquid samples. The volunteers were then given a drink consisting of 35 milliliters of vodka and sweetened grape juice, or juice alone, and the test was repeated with the same set of liquids. Test two: indicating the scent of a rose In a second experiment, the same people were asked which of three liquids smelled like roses. The researchers increased the concentration of rose fragrance until the volunteers gave the correct answer three times in a row. Test Three: Locating Another Aroma The Endenvelt team then moved on to pubs in the cities of Rehovot and Herzliya. There, they tested 45 volunteers. Using scent scratch cards, they had to identify the aroma that differed from the other two. Low alcohol level = improved sense of smell, high level = worsened sense of smell All three experiments yielded similar results. The research team found a link between the volunteer's blood alcohol concentration and their ability to detect and distinguish odors. Low blood alcohol levels improved their sense of smell, while higher doses of alcohol—two units per hour for women and three units per hour for men—significantly reduced their ability to detect odors. Endevelt hopes to identify the mechanisms driving this process, and brain scans will help her do so. Knowing more about these mechanisms could shed light on why some people lose their sense of smell. This knowledge could also aid in treating these individuals .