could be dangerous if you decide you don't like the taste at all and vomit.
Other than that I wouldn't have thought that it was dangerous. I thought that you would have had to swallow/drink a bucket full in order for there to be a significant risk of HIV. Having said that if you are putting anything in your mouth try to ensure that you don't have any open sores,and ensure that they do not have any STD's such as herpes etc...