Printed from smellbook.com/smells/wet-cardboard. This printout keeps the entry for Wet Cardboard itself: its description, reference card, Connections, questions, evidence, related smells, record details, states, names and citation. It leaves out your own notes, the map, the lists of paths, routes, stories and fragrance directions, and the lists headed “Also linked to” (other entries that share its place or material) and “Linked from”; they are on the page online. The entries this one links to are still printed under Connections and Related smells.
Categories and types group entries for browsing; they are editorial, not evidence. How smells are grouped.
A damp paper-packaging smell where cardboard becomes softer, earthier and more muted after absorbing water.
Its type is State because its name already describes a condition, such as wet, toasted or after rain. That is a way of grouping entries; it is different from the states listed for this entry, which record how a smell is met. See how smells are grouped.
Wet cardboard smells damp, earthy and muted, with a soft, papery heaviness that is duller than dry card. EDITORIAL
Named in the VERIFIED claims about this smell: not a list of what it is made of, and not its cause.
Links SmellBook records for this entry: where you meet it, molecules, related smells and comparisons. EDITORIAL links are chosen by SmellBook editors and VERIFIED links come from VERIFIED claims. Nothing here is a ranking, and a molecule is not presented as the cause of the smell.
QUESTIONS ABOUT WET CARDBOARD
Wet cardboard smells damp, earthy and muted, with a soft, papery heaviness that is duller than dry card. A faint musty or mushroom-like note can appear, and the smell grows stale and stronger if the box stays wet. Dry cardboard has a clean, slightly sweet papery smell, so the change when it soaks through is easy to notice.
It is met when parcels are left on doorsteps in the rain, around soggy boxes in recycling bins, and in garages, cellars and storage areas where boxes have taken on damp.
Typical settings: parcel in rain, wet box, storage area.
SmellBook links it to one place page: see it in Connections.
Material: Cardboard.
One VERIFIED scientific claim from one published source is recorded for this entry: Odorants of cardboard. This claim says only what its source supports, in the scope shown with it.
5 molecules are named in this claim; see the evidence for the role the claim gives them. Each molecule this claim names has only the role the claim states; one molecule is not the whole smell.
Wet Cardboard is a state profile showing how moisture changes paper-based materials.
SmellBook records one written comparison with other smells: see it in Connections.
Words that are easy to mix up: What is the difference between earthy and mineral?
No historical source or heritage record is linked to this entry yet.
Answers marked EDITORIAL are written by SmellBook editors to describe the experience and add no scientific fact. Answers marked VERIFIED point to claims on published sources, checked against each source's own summary where one was available (each claim's page says how); what each claim supports is in its own text and scope.
Scientific evidence · 1 claim
Aroma extract dilution analysis detected 36 odour-active compounds in cardboard, with vanillin, (E)-2-nonenal, γ-nonalactone, 2-methoxyphenol and δ-decalactone among the most intense, and moistening the cardboard released them extensively.
Cardboard samples analysed in one study; cardboard varies with its fibres, recycling and storage.
How this was found: Odour analysis with human assessors. People smelled the separated compounds or the material itself (for example gas chromatography–olfactometry, dilution analysis, recombination or a sensory panel). Source: primary study; sensory or perception work.
Michael Czerny & Andrea Buettner
Journal of Agricultural and Food Chemistry
DOI 10.1021/jf901435nEach molecule is named by the claim shown after it. Each molecule named here has only the role the claim states; one molecule is not the whole smell. About molecules in SmellBook
Links chosen by SmellBook editors, not a ranking.
Associations can vary strongly by person, place and culture.
PATHS FROM HERE
Each step is a relationship SmellBook editors recorded in the knowledge graph, named as it is published there. Paths are not ranked or personalised, and they do not mean the smells smell alike.
Each step is a molecule that a VERIFIED claim names for both smells, in whatever role the claims state. Sharing a molecule does not mean two smells smell alike.
MY SMELLBOOK · LOCAL ONLY
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WHERE THIS SMELL APPEARS
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FOR RESEARCHERS AND EDITORS
Identity, revision history, corrections and how to cite Wet Cardboard.
CULTURAL: This entry's associations depend on context, language, memory or culture; its description and smell words are editorial. It says nothing about research or historical evidence; evidence for this entry is shown separately: VERIFIED.
A state says how an entry is met, such as wet, aged or roasted. It does not create a new smell, and it adds no scientific fact by itself: states marked EDITORIAL come from the entry's own records, and only those marked VERIFIED are reported by a VERIFIED claim.
How this entry is identified and named, for citing it or matching it with other records.
SmellBook SB-0184 — Wet Cardboardsmellbook:smell:wet-cardboardhttps://smellbook.com/smells/wet-cardboardSmellBook. (2026). Wet Cardboard (revision 3, 2026-10-06). SmellBook Public Atlas. smellbook:smell:wet-cardboard. https://smellbook.com/smells/wet-cardboard@misc{smellbook_wet_cardboard_r3,
author = {{SmellBook}},
title = {Wet Cardboard},
year = {2026},
note = {SmellBook Public Atlas, revision 3, 2026-10-06, smellbook:smell:wet-cardboard},
url = {https://smellbook.com/smells/wet-cardboard}
}TY - ENCYC ID - smellbook-wet-cardboard-r3 TI - Wet Cardboard AU - SmellBook T2 - SmellBook Public Atlas PY - 2026 DA - 2026/10/06 ET - revision 3 UR - https://smellbook.com/smells/wet-cardboard N1 - SB-0184; smellbook:smell:wet-cardboard; resolver https://smellbook.com/id/smell/wet-cardboard ER -
The citation names revision 3 of 2026-10-06, so a reader can tell exactly which version was cited. Citing records what was read; it does not grant a licence.
Wet Cardboard is a state profile showing how moisture changes paper-based materials.
Editorial description expanded to answer what it smells like and where you meet it; independently reviewed.
Created 2026-09-22 · Updated 2026-10-06Dataset history In the SmellBook dataset since the first of three dataset releases of 2026-09-30.
No correction notices published for this entry. Corrections policyEVIDENCE MATTERS
SmellBook separates cultural association, community perception, verified evidence, prediction and experimental relationships rather than presenting them as the same thing. Read the evidence guide ↗ See the evidence coverage report ↗