Board Thread:Questions and Answers/@comment-139.60.25.36-20191219164436/@comment-2600:1702:3EC0:4B80:127:6271:138B:B780-20191219202703

There is nothing stated about its ability to protect against STDs specifically, but demon contractors cannot be killed by anything except other contractors and most of them have faster healing powers.

So, yes, but it has nothing to do with the demon of Lust specifically.