And reading this https://en.wikipedia.org/wiki/Hazard_symbol https://en.wikipedia.org/wiki/Hazard_symbol it seems that the skull and crossbones is now enticing

And reading this https://en.wikipedia.org/wiki/Hazard_symbol https://en.wikipedia.org/wiki/Hazard_symbol it seems that the skull and crossbones is now enticing to kids because pirates! Gah. Also, the biohazard symbol was designed to be memorable but meaningless so people could be educated.