I see people at Luton kissing and cuddling after meeting family from all over Europe. Other airports it is from travellers from all over the world. I don’t touch any surface at Luton including the hand rails on airport busses and lift buttons as I consider any airport to be high risk.
Also I am aware that I touch my nose, mouth and eyes hundreds of times a day. I am trying to reduce it but it is done without a thought.