I sleep with an oxygen concentrator and carry a cylinder around with me during the day, if you are frightened to go out in the outside world you are already doomed, buy an extra pack of antiseptic wipes but make sure you wipe down the packet first, if you go to the supermarket, enter a weighbridge office, touch some paperwork that the office has prepared, you are probably affected, do you eat whilst at work, do you get postal deliveries?
get on with it, do a test,