Polytetrafluoroethylene is a high- and low-temperature resistant engineering plastic. Qualified and impurity-free polytetrafluoroethylene will not cause any allergic reactions in humans, let alone be toxic. Any plastic will be toxic if it decomposes at high temperature. Polytetrafluoroethylene is known as the king of plastics. Its decomposition temperature is around 400 degrees. It is generally almost non-toxic within 200 degrees. Its melting temperature is 327 degrees.
If you are poisoned by plastic, the simple way is to leave the contaminated area, breathe fresh air, and then go to the hospital depending on the situation.