"TCP is recognized in California as a human carcinogen, and extensive animal studies have shown that it causes cancer. Short term exposure to TCP can cause throat and eye irritation and can affect muscle coordination and concentration. Long term exposure can affect body weight and kidney function."
Doesn't sound like something one should gargle tho.
You don't want to drink this,
https://en.wikipedia.org/wiki/1,2,3-Trichloropropane
and the data supporting it is far better than coffee. (the california law is stupid, but some of the things it lists actually are dangerous).
There are carcinogens and there are CARCINOGENS. Hot water is technically a carcinogen. Drinking water that is too hot can increase the risk of throat cancer. This doesn't mean we can't use them. We just have to be aware of the risks.
No, not if the "risks" is comically small. The warning label becomes meaningless when applied to anything with an astronomically low chance of causing cancer.
The list of things California says doesn't cause cancer is much smaller than its list of recognized human carcinogens. And animals studies are not 1:1 to humans.
It's literally a medical antiseptic designed to be gargled after dilution.
I would not put too much stock in Prop 65 warnings. Any restaurant with grilled or fried food is required to have them. Eyeglasses are known to cause cancer in CA. Until recently, so was coffee (buy after a long legal battle, coffee is no longer known to cause cancer here)
Doesn't sound like something one should gargle tho.