I've stayed healthy in an office where just about everyone's sick.
I got this because I work in an office where during the winter cold and flu season, germs seemed to get passed around, mutate and then come back to the original person just as they are getting better.  I had a horrible case of the flu this winter and bought it to protect those near me from catching it when I came back to the office.  It has done that job.  Noone caught the flu from me and I have yet to  catch a cold from my co-workers since buying this and I have two sick coworkers in the cubes right next to me.  Others in the vicinity have gotten sick, but I have not.  From this totally non-scientific experience, it seems to me that at least for the person who has the germ guardian in close proximity to the air they breath in by their desk it does a good job protecting them.  It is literally in an outlet right next to the monitor I sit at, nearly at face level.  My coworker who has gotten sick in the same cube farm is the same distance away from the folks who are ill with a respiratory cold...so maybe its working. So perhaps if combined with healthy eating and sleeping habits and other good hygiene this thing can do its job in keeping you from catching the stuff that's going around.
Rating: 5 stars