I have heard that how the virus infects you is also very dependant on how and with how much of the virus you get infected. If you get a few virus particles in you mouth, you will most likely survive, as your immune systems has sufficient time to respond. Get a few million deep in your lungs and anyone will be in serious trouble, possibly even if you have been infected before. So social distancing and/or masks (and possibly UV light) will probably remain an important part of our lives for a long time to come.