@ai6yr If you squint REALLY hard, you can sort of trace the lineage of this particular dumb idea.
The word "vaccination" originally traces back to milkmaids who'd catch cow pox, which is a mild disease in humans (relatively speaking), and develop immunity to smallpox, which is a deadly disease. "Variolae Vaccinae" is Latin for "cow pustules," hence "vaccination."
However, cases where humans have contracted H5N1 have thus far been anything but mild, so I think these folks are playing with fire.