Prospective monocentric descriptive study. Evaluation of COVID-19 patients with persistent loss of smell during 2 visits at 1 year intervals (V1 and V2).
V1 :The following examinations will be carried out specifically for the research.
* Clinical examination;
* Blood sampling;
* Recording of olfactory evoked potentials;
* Neurological examination and neuropsychological assessment;
V2 :
All examinations performed at V1 will be repeated at V2.
If the following examinations are not carried out during care within 3 weeks of V2, they will be carried out as part of the research during this V2 visit.
* Nasal endoscopy ;
* Assessment of olfactory and gustatory functions.
The following explorations will be carried out:
* Passing of two olfactory and gustatory scales; Olfactory and gustatory disorders will be quantified using two scales, the visual analogue scale VAS and the modified TSS;
* Sniffin Stick test.
In addition, MRI data from clinical care will be collected.
