The origin of olfactory disorders related to COVID-19
According to studies, 34 % to 86 % of people suffering from COVID-19 describe a loss of their sense of smell. This loss of smell is not irreversible and it is possible to strengthen or help its recovery through daily exercise. However, the exercise protocols must be suited to the way in which the virus acts on the olfactory system, which appears to be indirectly affected in the case of COVID-19. In fact, tissue inflammation leads to the obstruction of the nasal cavities, affecting the ability to detect and identify odorant sources.
Gilles Sicard, Gilles de Revel, Sophie Tempere