Society, as a whole, blows this whole "it's bad for you" thing way out of proportion. Then the media comes along like the whore they are and add to the paranoia. The late night news reports about mold and rampant diseases and makes them sound 10x worse than they actually are. Before you know it, everyone is a germophobe and wary of touching/ingesting/breathing anything.
Brush your fucking teeth. It's not going to kill you. I promise. It didn't hurt you before, and it's not going to hurt you now. Hell, you could probably swim in sewer water for an hour and you'd be perfectly fine.
Great marketing minds invented this scare to sell you products you don't need. Hand sanitizers? Please. I thought you guys were internet marketers.