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Effects of Smells and the Sense of Smell on Humans

The sense of smell (or olfaction) is one of our most important senses and is located in the part of our brain that affects emotion, memory and productivity. The sense of smell works around the clock and is the only sense that can never be “turned off”. It is the body’s first and most descriptive testing mechanism, instantly assessing whether an environment is good or bad. The human sense of smell affects 75% of daily emotions and plays an important role in memory. Humans can distinguish over 10,000 odor molecules from each other. These odor molecules enter the nose through inhalation and interact with the odor receptors. The olfactory receptors transmit this information to the olfactory center located in the limbic system of our brain. The limbic system is linked to the pituitary gland and hypothalamus area, which controls the secretion of hormones that affect appetite, nervous system, body temperature, stress level and concentration, as well as controlling memory and emotions in time. Since the olfactory system is located in the brain, the sense of smell is closely related to memory, mood, stress and concentration. Communication of emotions can be done by smell. There are also claims that odor affects mood, memory, emotions, mate selection, immune system and hormones. Academics and researchers are in agreement that, in its simplest definition, odor produces a mood that confirms desires and is therefore effective. Smell and taste, two of the five senses that Aristotle defined, are called “chemical senses” and are sometimes considered as a single sense, not separate from each other. About 80% of the flavors we taste are actually shaped by our sense of smell. Without the sense of smell, we would perceive only five tastes: sweet, salty, sour, bitter and spicy.

It is enough to leave the taste of a dish the same and only change its smell and play with its flavor. In fact, our sense of smell is stronger when we are hungry. An odor is a chemical that is usually dissolved in the air in very low concentration and that we can detect with our sense of smell. Results from research: The perception of all odors is objective and depends on the cultural structure or emotional state of the person. The human olfactory system changes over time and has difficulty identifying both bad and good odors unless they are very strong. This is called olfactory adaptation, and it usually takes an hour or so to adapt to a scent or fragrance. For example, people who work in an infused environment usually adapt to this essence and cannot distinguish its smell, while those who enter this environment from the outside can distinguish it immediately. Studies show that a noticeable level of diffused fragrance validates consumer desires, increases workplace productivity, and helps with health and medical conditions: In a US casino trial, a 48% reduction in gambling revenues after a fragrance is introduced into the test area. increase was observed. As a result of the trial, it was concluded that the noticeable odor in the air increased the mood and desire without affecting the customer’s judgment and without fueling the excessive gambling desire. A 1989 trial found that customers spent more time visiting an infused jewelry store.

Also in a US supermarket, the sales of the bakery aisle tripled after being smelled of freshly baked bread. It has been determined that giving the scent of lavender during breaks in a workplace prevents the decrease in work performance. At a university in Australia, the diagnosis of Alzheimer’s, Huntington’s and Parkinson’s diseases and brain diseases such as schizophrenia and obsessive-compulsive disorder is carried out using scents. In Japan, the effects of fragrances and essential oils on the treatment of Alzheimer’s disease are being studied. Studies have also shown that constant exposure to a particular scent helps with weight loss. At the Memorial Sloan-Kettering Cancer Center in New York, doctors use essences to calm the excitement during medical tests. At Duke University Medical Center, doctors use a variety of essences to relieve depression and mood swings in menopausal women. The use of essential oils to influence mood or behavior is called aromatherapy. Loss of the sense of smell is called anosmia. The absence of the sense of smell can lead to loss of appetite and libido, as well as depression resulting from memories of smell. Anosmia can sometimes be one of the early symptoms of Alzheimer’s and Parkinson’s diseases because these two diseases are caused by the degeneration of the systems related to the Limbic System. Effect of essential oils It is generally accepted that essential oils provide benefits in medicine and health. 100% pure essential oils are obtained from plant extracts.

Therefore, they have the health and purifying properties of these plants. Essential oils don’t simply mask bad odors, including cigarette smoke, they prevent it. Essential oils strengthen the body’s immune system when inhaled as micro-mist dissolved in the air. Scientific research confirms that essential oils fight and prevent airborne microbes such as bacteria, viruses and molds. In many hospitals in England, pine oil mist is introduced into the air to prevent the spread of infections. A study conducted in 1955 showed that 21 different types of essential oils reduce or completely destroy various microbes that can cause health problems within 3 hours. Essential oils have been used in the treatment of cough for many years. Various essential oils are also used in widely used cleaning and antibacterial products. Sources: Hirsch, 1995, Psychology and Marketing Knasko, 1989, cited in The Journal of Marketing, USA Hirsch, 1995, International Journal of Aromatherapy Sakamoto, et al, 2006, cited at University of Melbourne , 2006, cited at Miyazawa, 2006, Inhibition of Acetylcholinesterase Activity by Tea Tree Oil & Constituent Terpenoids Sweet, 1997, Scents and Nonsense: Does Aromatherapy Stink