PTC paper messing with my throat?

Is it possible that I could be allergic to a chemical in PTC paper? We did a heredity experiment in my science class that showed what students could taste something and who could not, but ever since I tasted it (It was very bitter, by the way.) my voice has been VERY scratchy, and I can barely talk, whisper, or... show more Is it possible that I could be allergic to a chemical in PTC paper? We did a heredity experiment in my science class that showed what students could taste something and who could not, but ever since I tasted it (It was very bitter, by the way.) my voice has been VERY scratchy, and I can barely talk, whisper, or anything. I'm not sick in any other way. Could the PTC paper cause this, or is it something else?
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