I do wonder whether or not there are any documented cases where people have picked up an illness from the floor of an airport (without going down on all-fours and licking the tiles)?

It seems these days in general people have a massively out of place fear of germs. It's not uncommon for me to see people wanting to fill their cars at petrol stations driving away because there are no gloves for them to wear. I'd never seen this until the last few years.

I like to keep things clean but I also strongly believe that exposure to a bit of dirt makes your immune system stronger. Recent medical research seems to point to overly sterile environments as a cause for a number of ailments affecting children in particular.