Those warning
labels are all over everything in California that contain or maybe may contain any sort of ingredients that may cause any type of a health risk.
They are even posted at swimming pools.
Now, maybe it goes too far, but anyone alive that remembers Love Canal, or the Hinckley California chromium 6 ground water poisoning by PG&E likely isn't bothered by it at all.
Nothing to see here, move along, swim at your own risk, smoke at your own risk.