”When PTFE is heated above 450 °C the pyrolysis products are different and inhalation may cause acute lung injury. Symptoms are flu-like (chills, headaches and fevers) with chest tightness and mild cough. Onset occurs about 4 to 8 hours after exposure to the pyrolysis products of PTFE.”
There is basically no safe limit for these chemicals — EPA limit for drinking water is 4 ppt. U.S. residents already have average blood PFAS levels to the tune of 4000 ppt.
https://en.wikipedia.org/wiki/Polymer_fume_fever
”When PTFE is heated above 450 °C the pyrolysis products are different and inhalation may cause acute lung injury. Symptoms are flu-like (chills, headaches and fevers) with chest tightness and mild cough. Onset occurs about 4 to 8 hours after exposure to the pyrolysis products of PTFE.”
There is basically no safe limit for these chemicals — EPA limit for drinking water is 4 ppt. U.S. residents already have average blood PFAS levels to the tune of 4000 ppt.