{"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:d-limonene-in-dryer-vent-air-with-fragranced-and-fragrance-free-detergent","key":"d-limonene-in-dryer-vent-air-with-fragranced-and-fragrance-free-detergent","label":"d-Limonene in dryer-vent air with fragranced and fragrance-free detergent","description":"In a study of six residential dryer vents, the highest d-limonene concentration measured in vent air was 118 μg/m³ (mean 33.34 μg/m³) in households using fragranced laundry detergent and 0.26 μg/m³ (mean 0.25 μg/m³) in households using only fragrance-free detergent.","scope":"Six households near Melbourne, Australia, all using the same two study detergents, one fragranced and one fragrance-free liquid laundry detergent: four used the fragranced one and later switched, two used only the fragrance-free one, and the fragranced values are from before the switch. One-hour samples of dryer-vent air from the start of drying, analysed for d-limonene only. Emission composition, not the smell of detergent; d-limonene is not named as the cause of a detergent's scent; not every detergent; the study's health conclusions are outside this claim.","evidenceClass":"scientific","canonicalUrl":"https://smellbook.com/evidence/claims/d-limonene-in-dryer-vent-air-with-fragranced-and-fragrance-free-detergent","attribution":"SmellBook (https://smellbook.com)"},"outgoing":[{"relation":"cites-source","label":"cites source","entity":"smellbook:source:dryer-vent-emissions-fragranced-and-fragrance-free-detergent-2018","entityLabel":"Emissions from dryer vents during use of fragranced and fragrance-free laundry products","record":"/data/graph/source/dryer-vent-emissions-fragranced-and-fragrance-free-detergent-2018.json","provenance":[{"basis":"claim-record","field":"verifiedClaims[CLM-DETERGENT-001].sourceIds","evidenceClass":"editorial"}]},{"relation":"claim-about","label":"claim about","entity":"smellbook:smell:detergent","entityLabel":"Detergent","record":"/data/graph/smell/detergent.json","provenance":[{"basis":"claim-record","field":"verifiedClaims[CLM-DETERGENT-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."}