If you have to take supplements, than your diet is not as nutritious as it should be.
One of the nastiest things that people don't realize, are doorknobs. What we know now with the coronavirus, is that it can last in the air for 3 to 4 hours. It can last on porous surfaces for about 3 days. And we're looking at solid surfaces like stainless steel and granite for about 7 to 10 days. Make sure you disinfect these surfaces. The doorknob is usually some sort of steel or brass. If you get some nasty hands on it, it's going to lay around for a long period of time. So, those solid surfaces, are really tough. Computer keyboards and mice should be really clean.