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SmellBook Public Atlas. smellbook:smell:metal. https://smellbook.com/smells/metal","bibtex":"@misc{smellbook_metal_r4,\n  author = {{SmellBook}},\n  title = {Metal},\n  year = {2026},\n  note = {SmellBook Public Atlas, revision 4, 2026-10-06, smellbook:smell:metal},\n  url = {https://smellbook.com/smells/metal}\n}","ris":"TY  - ENCYC\nID  - smellbook-metal-r4\nTI  - Metal\nAU  - SmellBook\nT2  - SmellBook Public Atlas\nPY  - 2026\nDA  - 2026/10/06\nET  - revision 4\nUR  - https://smellbook.com/smells/metal\nN1  - SB-0045; smellbook:smell:metal; resolver https://smellbook.com/id/smell/metal\nER  - "},"dataset":{"release":"2026-11-11","export":"https://smellbook.com/data/graph-export.json","sha256":"6e1112d672ccd0f7b5a892a2dde1dbb45f737814a338891970d3a4e25ba72e18","releases":"https://smellbook.com/dataset-releases"},"evidence":[{"evidenceClass":"scientific","label":"Scientific evidence","claims":[{"id":"CLM-IRON-001","urn":"smellbook:claim:the-metallic-smell-of-touched-iron","resolver":"https://smellbook.com/id/claim/the-metallic-smell-of-touched-iron","title":"The metallic smell of touched iron","text":"The authors report that the metallic smell noticed after touching iron tools or coins is a type of human body odour, linked to the breakdown of peroxides on the skin; rust, drinking water and blood containing ferrous ions cause a similar metallic odour.","scope":"Iron tools and coins handled by people; the source does not study railings or cold outdoor metal, so it applies to them only as touched iron, and the abstract names no single compound.","supportCheck":{"method":"phrase-in-abstract","description":"The statement the claim rests on was found word for word in the abstract fetched from the named service, and an editor read the full abstract against every part of the claim."},"sources":[{"id":"SRC-IRON-2006","urn":"smellbook:source:two-odours-of-iron-2006","resolver":"https://smellbook.com/id/source/two-odours-of-iron-2006","kind":"PRIMARY RESEARCH","title":"The Two Odors of Iron when Touched or Pickled: (Skin) Carbonyl Compounds and Organophosphines","authors":"Dietmar Glindemann, Andrea Dietrich, Hans-Joachim Staerk & Peter Kuschk","publisher":"Angewandte Chemie International Edition","date":"2006-10-27","doi":"10.1002/anie.200602100","url":"https://doi.org/10.1002/anie.200602100","passages":[],"citationCheck":{"method":"crossref","checkedOn":"2026-10-05","dateConfirmedTo":"day"}}]}]},{"evidenceClass":"historical","label":"Historical evidence","claims":[{"id":"CLM-METAL-001","urn":"smellbook:claim:why-handled-metals-smell-as-reported-in-1898","resolver":"https://smellbook.com/id/claim/why-handled-metals-smell-as-reported-in-1898","title":"Why handled metals smell, as reported in 1898","text":"An unsigned 1898 note in Popular Science Monthly reports W. E. Ayrton's observation that most commercial metals lost their smell when cleaned but acquired characteristic smells when handled or rubbed, and that breathing on cleaned metals also produced a smell; Ayrton looked for the source of these smells in hydrogen given off and carrying impurities such as hydrocarbons, and thought it probable that no metal particles reach the nose.","scope":"A contemporary summary of a scientific address, kept as historical evidence of how the question was understood in 1898; it is not current scientific evidence.","supportCheck":{"method":"passage-in-page-text","description":"The statement the claim rests on was found word for word in the text of the cited page or chapter of the digitised source, fetched from the named service, and an editor read that whole text against every part of the claim. 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