If this virus exists and is as contagious as they say I don't see how someone wouldn't have been exposed unless they lived in a hole. Think of the pocket of air you breathe with every footstep you make and how 1 hundred different people must have rebreathed that same pocket. And that's for every step you take is a new group of people. Think of how you smell a person walking yards away when they have too much perfume on or they farted. That's every person with this supposed so transmissible virus. Now think of every one you walk near everyday. How could you not have it already and be over it?