inclusion criteria: * adults 18 years of age or older * hyposmia/anosmia of onset immediately after an upper respiratory viral illness confirmed on snap n' sniff threshold testing, * capable, in the opinion of the primary investigator, of providing informed consent to participate in the study. participants are required to sign an informed consent form indicating they understand the purpose and nature of the study, and that they are willing to participate.

inclusion criteria: * adults 18 years of age or older * hyposmia/anosmia of onset immediately after an upper respiratory viral illness confirmed on snap n' sniff threshold testing, * capable, in the opinion of the primary investigator, of providing informed consent to participate in the study. participants are required to sign an informed consent form indicating they understand the purpose and nature of the study, and that they are willing to participate.

inclusion criteria: - adults 18 years of age or older - hyposmia/anosmia of onset immediately after an upper respiratory viral illness confirmed on snap n' sniff threshold testing, - capable, in the opinion of the primary investigator, of providing informed consent to participate in the study. participants are required to sign an informed consent form indicating they understand the purpose and nature of the study, and that they are willing to participate.

inclusion criteria: - adults 18 years of age or older - hyposmia/anosmia of onset immediately after an upper respiratory viral illness confirmed on snap n' sniff threshold testing, - capable, in the opinion of the primary investigator, of providing informed consent to participate in the study. participants are required to sign an informed consent form indicating they understand the purpose and nature of the study, and that they are willing to participate.