You don’t need me to tell you why this is so important at the moment. First up, you should definitely not be sharing your headset with anyone, especially with the older generation. The good news is there are ways to make sure it is as clean as possible, but then again even after disinfecting your headset I still suggest not sharing it, but it is something you should do regardless of whether you are sharing it or not…
The first thing to do is to see if you can remove the foam padding around your visor. Headsets like the Oculus Quest and the Oculus Go both have removable face covers and that means you can clean them a lot easier. I also suggest you give it a clean even if you are using a VR cover as sweat particles can still leak through (but it is a still a good way to keep the headset cleaner than it would be without the cover). Sadly running a disinfectant wipe around the foam padding is just not going to cover it. You need to be able to soak the whole thing in disinfectant. Try and dip the whole face cover in bleach or any other germ removing formula and then let it sit for a little while coated in the disinfectant.
But now is the important part, you need to make sure every last drop of that defendant is removed from the foam padding or face cover before you put in back on the headset. At the end of the day, it will be in full contact face and close contact with the eyes so you need it as rinsed as possible. Then I would suggest you leave it on a towel on a radiator to dry naturally.
Doing all this might mean you are not able to play VR for a day or so, but it is better to go without it for a while that spreading god knows what around. To be honest, you should be doing this at least once every few months anyway, but these days doing this is all but essential. Also make sure to wash your hands both before and after playing, especially if you are sharing the controllers.