For a man receiving oral from a female sex worker when no condom is used, are there methods that demonstrably reduce the chance of getting an STD? I'm looking at this from an engineering point of view (trying to put real NUMBERS to this question).
My idea is to:
1. Have the sex worker gargle vigorously for 30 seconds with Scope or something stronger. Please suggest something better than mouthwash, if it would be helpful.
2. After receiving oral sex (up to 30 minutes), rub lots of hand sanitizer of the penis, scrotum and pubic area.
3. Urinate soon and pee hard, to remove fluids from inside the urethra.
Would this do much to reduce the chances of contracting an STD or would it already be too late to prevent infection/transfer? Reducing a 0.01% chance to 0.009% isn't worth the bother, but reducing 5% to 0.5% definitely IS.
Also, would protecting the urethra during unprotected oral sex help much (such as using by applying a small round waterproof Band-Aid over the penis tip beforehand)? I couldn't find much about HOW the urethra is involved in catching an STD (most references indicate skin-to-skin, which begs the question about the safety of handshakes if a co-worker doesn't wash after peeing).
Finally, after reading DOZENS of forum posts, all I hear, overall, is that unprotected oral sex from a sex worker is "low risk", "generally safe sex" and other vague, numberless terms. I want NUMBERS!!! I can't find any overall risk statistics in terms such as overall STD infection rate per 1,000 unprotected oral sex events from sex workers. Do any such numbers exist? BBBJ (unprotected oral) is the number one request of clients and the number one offering of sex workers. In the hundreds of reviews I've read, I've NEVER read that someone caught an STD. Are my chances higher than 1 in 1,000? 1 in 100? 1 in 10? Let's see if we can quantify this clearly!
Note: I know that the HIV risk is effectively zero, based on a lack of substantiated cases and that Herpes is ubiquitous and not too much of a worry (we probably already have it), but I'm more concerned about the other STDs.