Not on the original point, but yours...You own a car. You weigh the benefits and the risks. Your vehicle, when used the way it is intended spews various toxins into the air. This causes people sickness and death. Are you responsible for damages?
I hire a surgeon to take my kid's tonsils out. He takes his gall bladder out. Am I responsible for damages to my kid? Does my kid sue me?
This is what mal practice insurance is for, right?
closer?:
You own a house that you rent. Your tenant takes care of the lawn. He spreads a pesticide that kills the neighbors cat. Are you the responsible one?
We need a lawyer... because I'm not one...