What is a Fae and is their blood poisonous to vampires?

Fae is just another Word for fairy. I guess their blood could be poisonous to vampires if they made there fairy dust enter the vampires blood stream, or something like that...

Depending on what folklore and fiction you read or "see", fairy blood has been known to be intoxicating and drug-like to vampires. According to the Southern Vampire Mysteries (what True Blood is based on) Fairy blood or "fae" blood is very potent and addictive. It's literally like heroin to vampires. Also keep in mind that these fairies aren't tiny Tinker Bells with wings . They're life sized and look kinda like goblins in their true form.