Don’t forget sweat (one MORE reason to wipe off the GYM equipment before you get on, or the doorknob touched in the last 3 days by someone with a sweaty Ebola fever).
And liquid droplets from a cough or sneeze can travel about three feet and land on things that can later be touched. Or onto you if you are withing three feet of the event when it happens.
All of the above are so easily forgotten.
People call me paranoid when i wipe down at work when someone has a Cold.
It reduces the impact dramatically if just door handles are wiped regularly through the day.
If Mr Lister doesn't mind ...Initiating Paranoia Mode.