If your liver "exploded", you wouldn't come close to living long enough to make it to a lawyer's office.
Having labels on products that are documented as producing unwanted and serious health risks sound foolhardy, and I do laugh at them(as I don't smoke, drink or do other drugs), but in today's society they are only rational choice to provide for general education. How? Seeing as we cannot logically ban all things that could pose a health risk (millions of things would be banned then), people are not seeking this information on their own, and obviously common sense WRT health is not being taught in the home anymore.
It doesn't hurt anybody and takes up a little less room for the advertising of the crap they're selling. Education does not hurt you, it's what is done with it that can hurt you or someone else. WRT it being there and not reading it, Im with superbug. I really hate this term, but "shit does happen". It would then be the duty of another citizen or citizens to not make the same mistake. You can't stop people from learning nor making mistakes, but you can unclog a lot of the BS in courts with a safeguard like warning labels (at least until society decides to start becoming educated again).