I know this has been discussed before, but I couldn't find the thread.

Yesterday we were in a plane with a sick woman. Cough, cough, cough. Sneeze, sneeze, sneeze, etc. The plane was sold out. Now my travel companion says she is coming down with something and I don't feel too good, either.

Is there anything I could have done? First thing we did after deboarding was rush to the washroom and scrub.