Evaluation of Two Methods of Olfactory Rehabilitation in Post-viral Loss of Smell: Classic and Intensive

One of the most common causes of loss of smell is upper respiratory tract infection. These disorders can be quantitative (hyposmia or anosmia) or qualitative (parosmia or phantosmia). Loss of smell has been found as a major and frequent clinical sign of Sars Cov2 infection (more than 50% of patients screened at the CHU Nancy). Spontaneous recovery remains possible. It usually occurs in the first month . But when symptoms persist, the therapeutic management of post-viral anosmias is poorly codified in the literature. Olfactory rehabilitation could allow faster recovery and better quality, but the published protocols are numerous and could only be tested on small inhomogeneous series of patients (mixture of post-viral and post-traumatic hypo-ansomy). The significant increase in the population of patients suffering from post-viral anosmia following the current pandemic situation makes it possible to consider a prospective study aiming to compare two olfactory rehabilitation protocols: "classic" and "intensive" in a population of patients. suffering only from post-viral hypoanosmia. Hypothesis: Intensive or classic olfactory rehabilitation allows better results than spontaneous recovery