Let's dispel a few myths:
Affluenza is not a prion disease and you can't get it from eating a billionaire.
While it's true that billionaires are parasites; the mechanism of their parasitism does not increase their pathogen load beyond levels that basic food safety protocols can handle.
It is important to field dress any billionaire you are planning to eat as with any mammal. Butchery and cooking should be relatively easy as most billionaires have a full restaurant kitchen in their residence.
Happy Hunting.