SarahB; you are wrong about the fact that HPV passes through bodily secretions. that's actually the one thing that it does not do. HPV is a local infection, that means it doesn't spread, it's living in your cells in the area where it's infected. if you don't have any present warts, there's not really a way to figure out which part of you is infected, but that's the way it works.
i'm getting my information from cancer.org, and somebody asked how do you get genital HPV? the organization answered as followed;
Genital HPV is spread mainly by direct genital contact during vaginal, oral, or anal sex. It is not spread through blood or body fluids. HPV is passed from one person to another during skin-to-skin contact.
Infection is very common soon after a woman becomes sexually active. In one study, more than 50% of college-aged women were found to have gotten an HPV infection within 4 years of first having sex.
Transmission by genital contact without sexual intercourse is not common, but infection has been reported in women who have never had sex. Oral-genital and hand-genital transmission of some genital HPV types is possible and has been reported. Transmission from mother to newborn during delivery is rare. When it occurs, it can cause warts in the infant's throat called respiratory papillomatosis.
here is the website LyLy2010, i hope it's helpful to you!
http://www.cancer.org/Cancer/CancerCauses/OtherCarcinogens/InfectiousAgents/HPV/HumanPapillomaVirusandHPVVaccinesFAQ/index
It's highly unlikely. Sexually transmitted HPV needs to have direct conact to spread for the most part. It is usually though the bodily secretions that make it easier. It is possible to get HPV in your mouth or throat though. Hands it is unlikely. tell him to get treated though.