I echo this. Recently I was exposed to someone for several hours in close quarters who had COVID, positive test. I won’t go into details but it was unavoidable, I knew what I was getting into but I chose to expose myself regardless. A few days later, again exposed to their spouse who came down with it. They had all the symptoms, and a Covid test. I used XClear for a several days, 3-4 times per day. I did not get Covid or symptoms. I have not had COVID that I know of. I did get the COVID shot back in August. Take that info as you will.I used the spray the day I was in close quarters with a friend who was feeling bad and tested positive the next day. All others there got covid but me.