A few years ago there was an article about a woman in Germany who was told by the unemployment office to consider sex work (which is legal there I believe).
I think you're right about what's legal there - I saw a "sex store" tucked in among the other businesses when transiting the Frankfurt airport. Not sure
exactly what they were selling - probably porn & toys of some type.
But in any case, it's not 1945 any more - today there ARE things going around that a shot of penicillin won't cure.