Three Invention Thoughts for Coronavirus

 
  We've got smoke detectors, why not virus detectors? Could a device be created that would sense out the germs in the air, saying they're at seven microbes per square foot, or thirty per square yard?
  How about a disinfectant drop? You would have it up against the ceiling, and you'd clear people out of the room every couple hours, and drop a mist of disinfectant on the room.
   Or, how about something so simple as a series of fans set up, so they took air through one door, into a meeting room, and then down the hallway and out a second door. In the meeting room, there would be floor fans, driving the air up to as soon as you emitted germs with a cough. The air would carry the germs up and away from others, then the series of fans would take the air just underneath the ceiling and out the door and on. Of the ideas so far, this one seems the best, as there doesn't seem to be any reason it couldn't be invented and no reason it wouldn't work.
   Or, maybe skip the door-to-door escapade, and just have blowers in the floor and vents in the ceiling.