{"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:more-ventilation-less-classroom-odour","key":"more-ventilation-less-classroom-odour","label":"More ventilation, less classroom odour","description":"In university computer classrooms, increasing the air exchange led students to report better air quality and less odour; mean carbon dioxide was 1,185 ppm at the lower and 922 ppm at the higher air exchange.","scope":"University computer classrooms in a blinded study; the odour finding comes from the 83 students followed in both conditions, and rooms for younger pupils may differ.","evidenceClass":"scientific","canonicalUrl":"https://smellbook.com/evidence/claims/more-ventilation-less-classroom-odour","attribution":"SmellBook (https://smellbook.com)"},"outgoing":[{"relation":"cites-source","label":"cites source","entity":"smellbook:source:ventilation-in-computer-classrooms-2008","entityLabel":"An experimental study on effects of increased ventilation flow on students' perception of indoor environment in computer classrooms","record":"/data/graph/source/ventilation-in-computer-classrooms-2008.json","provenance":[{"basis":"claim-record","field":"verifiedClaims[CLM-CLASSROOM-001].sourceIds","evidenceClass":"editorial"}]},{"relation":"claim-about","label":"claim about","entity":"smellbook:smell:classroom","entityLabel":"Classroom","record":"/data/graph/smell/classroom.json","provenance":[{"basis":"claim-record","field":"verifiedClaims[CLM-CLASSROOM-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."}