Even though I was taught that it is not truly summer until you eat a pound of dirt and maybe touch a dead animal or two, I still do not like staying in a hotel in that respect! Not the sheets at least! :) But I think I caught VD from a motel toilet once. There is so much forensic work being done on biological and microbiological evidence right not that may even supersede fingerprinting and the DNA analysis. Or at least support or deny it in the near future. Apparently microbial communities are individual, do not change much over time and also may indicate who you have been with. And they may supposedly, in an experimental sense at this point, be swabbed from even a smeared finger print, some sweat or skin oil or somewhere that DNA is not viable. Supposedly the traces can be detected up to 4 days in the past at this point. I am sure that we even still have a lot to learn from tardigrades. And Agh... that is the best article I have seen about it tonight but I will edit if I find the best one.