I was looking up some medical information and came across a piece about something I had been told in the hospital.
Everytime you flush you toilet, a very fine mist comes back up into the air. You should step back immediately so the mist doesn't land on you. The piece gave more additional information than I received in the hospital. Most bathrooms have a toothbrush holder on one side of the sink and a glass holder on the other side. Make sure your tooth brush holder is on the far side from the toilet bowl. You should also keep paper cups in a dispenser type holder. And instead of just stepping back quickly, train your family to close the cover before flushing.
We always put the toilet lid down when we flush the toilet for that very reason