{"schemaVersion":"1.0","generatedAt":"2026-09-22","licence":{"status":"not-yet-granted","spdx":null,"statement":"No licence has yet been granted for SmellBook-created datasets. They are publicly readable; reuse beyond citation and quotation needs permission until a licence is published."},"node":{"entityType":"claim","urn":"smellbook:claim:the-metallic-smell-of-touched-iron","key":"the-metallic-smell-of-touched-iron","label":"The metallic smell of touched iron","description":"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.","evidenceClass":"scientific","canonicalUrl":"https://smellbook.com/evidence/claims/the-metallic-smell-of-touched-iron","attribution":"SmellBook (https://smellbook.com)"},"outgoing":[{"relation":"cites-source","label":"cites source","entity":"smellbook:source:two-odours-of-iron-2006","entityLabel":"The Two Odors of Iron when Touched or Pickled: (Skin) Carbonyl Compounds and Organophosphines","record":"/data/graph/source/two-odours-of-iron-2006.json","provenance":[{"basis":"claim-record","field":"verifiedClaims[CLM-IRON-001].sourceIds","evidenceClass":"editorial"}]},{"relation":"claim-about","label":"claim about","entity":"smellbook:smell:cold-metal-rail","entityLabel":"Cold Metal Rail","record":"/data/graph/smell/cold-metal-rail.json","provenance":[{"basis":"claim-record","field":"verifiedClaims[CLM-IRON-001].smellSlugs","evidenceClass":"editorial"}]},{"relation":"claim-about","label":"claim about","entity":"smellbook:smell:metal","entityLabel":"Metal","record":"/data/graph/smell/metal.json","provenance":[{"basis":"claim-record","field":"verifiedClaims[CLM-IRON-001].smellSlugs","evidenceClass":"editorial"}]}],"incoming":[],"corrections":[],"citation":null,"boundary":"Edges are typed and unweighted; none is a similarity, recommendation or personalization score. Browser-local Personal SmellBook data is never part of this export."}