Sexual adventure

So I'm a guy, I just want to be clear, I'm using my girlfriends account and I have a question that I feel like it would be better to ask girls rather than google. We talked about licking chocolate syrup off of each other's parts just to try it. We don't normally do earning things off each other so I want to know if it's safe to have that on her vagina? I'm not worried about me but idk about the vagina that much