My first thought was that they were immune because they're dead. Then I remembered that Angel is dead. So maybe they're immune because they don't have souls? They did seem to recognize her, but they were scared, not worshipful.
Mh I'm not sure about that... Even though I agree with you on Jasmine likely drawing at least part of her "nourishment" from the act of being worshipped, but there clearly are worshipful vampires. I'm pretty sure a sizeable number of the Master's minions were beyond loyalty, beyond fearful compliance, and deep into quasi-religious worship. Just look at the black leader - don't know his name atm - of the remnant of the Aurelius Order, after the Master's death in "When she was bad"... that guy's whole character concept is clearly about religious worship.My shakey theory is that since Jasmine is a sort of god, albeit an evil one, she maintains her existence by being worshipped.Demons and vampires are not really inclined to worship anything since they have no conscience, and they have no spiritual or emotional needs. Humans or any other being, like Angel, who have a soul are then more vulnerable because of that innate need to believe in something. I hope you understand what I mean. And does that make any sense?
If you mean the same dude I'm thinking of, he did get in contact with her blood... a vampire scratched Jasmine, and the same vamp dug his nails into that guy, so a trace amount of blood got passed. Yes, it's far-fetched, but I'm pretty certain that's exactly the explanation they had in mind, especially since the "Previously On" of "Magic Bullet" explicitely showed both scratches taking place.But there is not one form that is inherently pleasing to all humans, which is probably why that one dude flipped out and called her a monster. Even though he did not come in contact with any of her blood.