I'm a massage connoisseur and I go for regular massages with various masseuses, all performed on a proper massage couch. A few months ago I went for a massage and laid face down on the towel covering the massage couch. The massage was performed with perfunctory style, I turned over and the masseuse completed the massage and finished off with an only hand job. All very nice. However a few days later, I started to get an itch 'down there'. Not on the manhood mind, but in the groin area. I'm scrupulously clean and very rarely engage in full sex with escorts, perhaps once a year or so. So I'm pretty sure I didn't get anything from an escort I visited months prior, I got the itch from lying on a dirty towel. Eventually the itchiness cleared up and all was OK a week or so later. I also have had similar occurrences with cold sores on my face, due to laying my face down on a dirty towel. I stopped going to certain places and have not had a problem since.
I now ask the masseuse if all the towel are fresh, I never lie on a pillow unless it is covered by a clean towel. I never put my face in the massage couch 'hole'. Perhaps I'm paranoid, but I've never had a problem since.
So if you guys are getting random itches 'down there' or unexplained rashes or cold sores - next time check the state of the towel(s) you're lying on!!