A Nasal Treatment for COVID-19

COVID-19 PARTICIPANTS Who May Qualify: Subjects, 18 and above, with mild COVID-19 upper respiratory tract infection symptoms - positive rapid COVID-19 test - Ordinal Scale for Clinical Improvement \< 3 (OSCI, Appendix 2) and/or - Fever \> 100 degree F and/or - Nasal congestion Who Should NOT Join This Trial: - FEV1 (Forced Exhaled Volume) \< 55% predicted on the day of study procedures - OSCI ≥ 3 (Objective Structured Clinical Exam) - Pregnancy - Inability to follow commands or perform study procedures including spirometry, coordinated inhalation of study medication HEALTHY CONTROLS Who May Qualify: Subjects, 18 and above, without mild COVID-19 upper respiratory tract infection symptoms - negative rapid COVID-19 test - No known medical problems or taking any medication that, in the investigator's opinion, would make them unsuitable for participation. Who Should NOT Join This Trial: - Pregnancy - Inability to follow commands or perform study procedures including spirometry, coordinated inhalation of study medication Always talk to your doctor about whether this trial is right for you.