ok so i just got a bottom retainer and ther was like a bump in it that was really bugging me. so i got home from school, took a lighter and a razor. first i got the bump really hotso it was soft them i started to cut it off with the razor. i know that plastic gives off like a toxic smoke when it burns and i recognized the smell when i was burning the retainer so i was jut wondering if like the toxin was in the burnt area?
thanks