Pathogens are a worry for me too. I never walk into a crowded room, never touch a door knob without a glove or tissue, never drink from a glass, never shake hands, never... never... never...

Really, I think this easily can get over-worried about. We live with most of the nasties all the time without too much problem and to get rid of them, some soap and water, maybe an alcohol wipe or a dilute bleach wipe, and a thorough drying will take care of just about any thing worth worrying about. We probably should be much more concerned about life affecting issues from playing out in traffic in the company of cell phone users.