Is there a genetically-mediated ability to smell iron, where some people have it and some don’t? Or is there something in my skin that reacts with iron, that isn’t in everyone’s skin? If I handle bare iron for a while, I can smell it. If you’ve ever simmered a strong tomato sauce in bare unseasoned cast iron, you’re likely to have noticed that the iron affected the sauce. I think it’s the same thing, or at least chemically related in a simple way.
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