European researchers who studied patient experiences stated that the loss of smell associated with the coronavirus is unique and different from that experienced by individuals with a cold or flu. The sense of smell is one of the most important senses bestowed upon humans; it allows us to distinguish between different things. Through our sense of smell, we enjoy pleasant fragrances from perfumes and flowers, and we can recognize the aroma of delicious food and coffee. At the same time, the sense of smell serves as a warning signal for potential dangers, such as the odors of chemicals, gas leaks, and spoiled food, in addition to the link between the senses of smell and taste, which work together to identify different substances.
The report addressed the causes of loss of smell, including upper respiratory diseases such as colds, sinusitis, influenza, seasonal allergies, head trauma, tumors, or nasal polyps, all of which can lead to loss of this sense. It was noted that, in addition to these causes, malnutrition may also affect the sense of smell. The report confirmed that smoking and the use of certain types of medications can lead to loss of smell, as well as exposure to odors from certain chemicals, such as pesticides, which can affect the mucous membranes lining the nose and consequently the sense of smell. Finally, the report mentioned that a gradual loss of smell is one of the manifestations of natural aging diseases.
