Can any person with medical knowledge answer this question?
He sounds an altogether unreliable sort of person. He sounds like a layabout and a liar. Warts are not inherited. If they are a particular kind of genital warts, they can be passed on during intercourse, and if caused by the papilloma virus, can eventually cause cancer in women. There are, however, different causes of warts and different kinds of warts. If I had this kind of thing I would not hesitate to see a doctor. If nothing else, they must be painful if they bleed. If they are the dangerous sort, at least get the woman concerned to go to the doctor. If she can’t get a photo of these warts, she can perhaps look at pictures of warts on a medical information website and print off a picture of the nearest thing to take with her to the GP.