Do people in America sue companies for packaging foods with no warning labels?? I mean, why should a peanut butter jar have a warning label for peanut allergy?
They have to put warning labels on products. Many foods that are manufactured here, for example, let's say chocolate, go through a production mill machine, but that machine may also be used for packaging peanuts. Thus the need for the chocolate bar to have a label saying "may contain traces of peanuts." I'm sure they clean the machines off after using each food product, but traces may still remain.
Most places that sell hot beverages have warning labels on the cups stating that the contents are HOT. Well I certainly hope so, I order coffee expecting it to be hot. This is due to some lady suing (and winning) McDonalds because she burned a rather sensitive are after placing a cup of coffee between her legs while she was driving. The jury determined that McDonald's coffee was exceptionally hot and that she should have been warned about it.
Years ago shortly after "cruise controls" first came available in cars a guy sued (and won) GM when he crashed his motorhome after having set the cruise and got out of the driver's seat. The jury determined that GM should have warned him that "cruise control" was NOT an auto pilot.
We have warning labels on all sorts of household cleaning products warning that they are not to be taken internally. (beats me, I've never wondered what 409 or Windex tasted like)