At the poison center annual meeting a few years ago they went to Palm Springs CA. There were warnings on the doors of the hotel about the risk of the silica in the desert.
In California, there are warnings on bread wrappers about containing Carcinogens.
I bought an aluminum step ladder 20 years ago. Plastered with warnings. Last week, I saw the same ladder in the hardware store. YOu can not see the ladder for all the additional warning labels added in 20 years.
If it is so darn un-safe don't sell it!!!