I've never heard of that but there are products you can buy online called pre-seed.
I've heard it can cause infection...
Or...if it doesn't show the doctor basically says, that eggs can contain salmonella, and that's why they are worried about infection. I don't know how long he's practiced medicine, but he said that he hasn't seen anyone become infected by using egg whites, there's also another site if you google, and I quote myself, "danger in using egg whites for conception" the second article should have www. trying to conceive .com as the website, or look for that one. It's a site that has a forum for women who have successfully conceived using egg whites.
Sorry last post, you have to type in exactly what I quoted. That's what I googled, and that's how I found the sites. The doctor's site is like the 3 or 5 one down...hope that helps!