Covid always changes your taste and smell. Did you have those symptoms? If not, it probably wasn't Covid.
IF, big IF, everyone would take about 4000-5000 IU's of D3, 1000mg of vitamin C, 45-50mg of zinc every day, they probably won't get Covid and other colds and flu.
Studies also show washing or sanitizing your hands very frequently, is 45% more effective than masks at preventing Covid. The mask doesn't do any good for well people, only sick people to keep from spreading their infected droplets. They only real good the mask is for is to keep your HANDS, which touch everything, from touching your nose or mouth. Thus washing your hands often.
Infected people can touch grocery carts, items on the shelf and put them back, door knobs and handles, etc. Wash your hands on only wear a mask to keep you from touching your nose or mouth.
The Israeli study on vitamin D was the best I read about and the Muslim women were the ones getting and spreading Covid because they, being covered up, didn't get enough vitamin D in the sun.