https://www.thelancet.com/article/S2213-2600(21)00160-0/fulltext 2 Dollars for a Nose Spray called Budesynol. You do not need the Prescription one, the shelf spray is sufficient. I would do two sprays every 2 hours if I have to be indoors in public spaces for periods of time. 1 spray with Budesynol and 1 spray with Budesynol that you add 1 DROP of Bleach or Peroxide to into the bottle. Just 1 drop per spray bottle creating a 0.1 percent solution, absolutely safe. You could drink a drop of Bleach in water and it won’t hurt you. This is a 100 percent cure to any Nasal Viral disease. Breathe it in right through to your throat, then spit out. Good idea to gargle with salt water before and after. No worry’s about Covid a-z