It's weird but I have the same exact problem as your friend. At first when I read your message, I thought maybe one of my friends wrote this about me and didn't tell me. I even quit my job because I was being made fun of so bad at work. It was hard for me to tell my parents about what was going on, because they also never smelled anything bad coming from me, and my mom would always tell me it was all in my head. It seemed to only happen at work. I've smelled like this for a few years now, and the first time I smelled bad I did research on sulfur Body Odor (in the year 2004), and I'm not kidding when I say I found zero postings about it, until now. I've found hundrends if not thousands of threads on this issue, and it seems to only be a problem with women. Let you friend now she's not alone.