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Inhaling plastic (PTFE) fumes is certainly not advised, as doing so can lead to pulmonary edema. This has occurred in persons that have inhaled large amounts (like people that work in plastic factories), but it is unlikely that you caused any permanent damage by this one-time occurrence. Since smoking tobacco is harmful in itself, I certainly do not advise it, but if you are going to do so, I strongly recommend that you do it only with approved devices, such as pipes.
If you experience any shortness of breath or unusual coughing, I recommend that you contact your primary care physician or a pulmonologist immediately. If you have suffered no symptoms as of yet, it is unlikely that you will though. Good luck and take care!