I’ve been thinking about this for a while now. What would happen if a Viltrumite donated blood to someone? Would that person then develop Viltrumite powers? Or would they die due to the blood not being human or not matching the blood type? Since Viltrumite blood is so pure and compatible, the human would slowly but surely become a Vilturmite.
That’s not how blood transfusions work. Getting blood from another organism doesn’t change your DNA.