Not sure, but I have heard that Obola sex can be pretty freaky...
Watched that segment on 20/20 about the nurses that cared for Duncan and they seemed like dopey medical people who were all proud of Duncan and how nice he was, not that he lied or brought a disease here that never was here to begin with. Anyways they said it was 3 gallons of diarrhea every day from him they had to clean up, never said how many gallons of vomit though. Even after that they were singing praises for Duncan. I was appalled. That kind of body fluids mixed with sex would be like being in a WAR ZONE.