Hi. I'm not a medical professional but I have read countless postings and done tons of research on everything sexually transmitted as i tend to be rather paranoid about such things. From what i've read, molluscum is not transmitted by oral sex and does not cause a bump that oozes or produce a clear liquid. In fact, the molluscum virus causes a raised papule with a rather pink ring around it and a white center (similar to the color of cottage cheese). Furthermore, from what i've read, strictly from the experts and contributors to this site, oral sex, especially the receipt of, poses very little risk to the recipient. In fact, oral sex is a very inefficient way to transmit stds, in general. As for syphilis, syphilis is a flat, painless chancre which looks kind of depressed in the center with a definitive edge. From what the experts have said, contracting this too is low risk and most people don't have syphilis in the mouth. I hope i've helped.