LEARN SMELLBOOK
Understand the ideas behind the Atlas.
Short public explainers help separate chemistry, perception, memory, culture and language without turning the site into a textbook.
FREE COURSE
Introduction to Smell
Five short lessons on noticing smells, finding words for them, where they come from, how places smell and why smells feel different to different people.
FOR TEACHERS
Classroom guides
Free lesson plans that use the courses and Atlas entries with safe, familiar materials.
FREE COURSE
Smell and Culture
Five short lessons on smellscapes (the overall smell of a place, from its many sources), smell through the day and year, shared smells with different meanings, the smells of work and recording smell heritage.
FREE COURSE
Smell and Science
Seven short lessons on where smells come from and how researchers find the molecules that matter, with every finding given in a VERIFIED claim's own recorded wording and its scope.
FREE COURSE
Smell Vocabulary
Learn the words people use for smell and compare easily confused pairs, such as earthy and mineral, with examples from the Atlas.
How smell works
Smell begins with molecules and biology, but the human experience of smell also involves attention, context, memory and language.
Read explainer ↗02EXPLAINERSmell & Memory
Smell can become tightly linked to places, people and periods of life, which is why two people can react very differently to the same odor.
Read explainer ↗03EXPLAINERSmell & Place
Places can have smell identities created by materials, weather, activity, food, vegetation and expectation.
Read explainer ↗04EXPLAINERSmell & Food
Much of what people call flavor depends on aroma, while cooking changes ingredients into new smell experiences.
Read explainer ↗05CROSS-SENSORYSmell & Color
People often use color to communicate smell even though odor itself has no visible color.
Read explainer ↗06EXPLAINERSmell & Language
Smell is difficult to describe consistently, so useful language needs both everyday words and structured context.
Read explainer ↗07EXPLAINERSmell States
The same material can smell different when it is wet, dry, heated, aged, cut, washed or enclosed.
Read explainer ↗08EXPLAINERSmell Intensity
Intensity changes how noticeable, pleasant or overwhelming a smell can feel, even when the smell identity itself is familiar.
Read explainer ↗09SPACES EXPLAINERIndoor Air & Scent
Indoor smell identity is shaped by ventilation, materials, people, cleaning, food and sometimes deliberate fragrance.
Read explainer ↗10SPACES EXPLAINERFragrance-free Spaces
Sometimes the best scent direction is no added fragrance at all.
Read explainer ↗11EXPLAINERWhy Context Changes Smell
Expectation, place, memory, neighboring smells and use context can all change what someone notices in the same odor source.
Read explainer ↗12EXPLAINERNatural vs Manufactured Smells
SmellBook separates where a smell comes from from how people describe it. A forest, fuel station and new-car interior can all have recognizable smell identities without belonging to the same source type.
Read explainer ↗13EXPLAINERSmell & Cleanliness
Cleanliness has a sensory reality and a cultural language. Soap, laundry, citrus, mint and disinfected spaces can all signal 'clean' in different ways.
Read explainer ↗14EXPLAINERSmell & Season
Season changes temperature, plants, food, clothing, ventilation and routine—so the smell world changes with it.
Read explainer ↗15EXPLAINERSmell & Temperature
Temperature can change volatility, intensity, airflow and what a smell feels like perceptually.
Read explainer ↗16EXPLAINERSmell & Familiarity
Familiar smells are easier to recognize, name and connect to routines, places and memories.
Read explainer ↗17EXPLAINERSmell & Everyday Objects
Ordinary objects often carry strong smell identities because materials, manufacturing, age and use leave repeatable sensory cues.
Read explainer ↗18EXPLAINERSmell & Materials
Paper, wood, rubber, fabric, leather, metal and wax can all carry recognizable smell identities shaped by processing, age and environment.
Read explainer ↗19EXPLAINERSmell & Routine
Repeated daily smells can become anchors for time, place and expectation—from toothpaste and coffee to laundry and the morning kitchen.
Read explainer ↗20EXPLAINERSmell & Travel
Travel has its own smell vocabulary: terminals, hotel rooms, transit systems, luggage, conditioned air and unfamiliar streets.
Read explainer ↗21EXPLAINERSmell & Textiles
Cotton, wool, towels and laundry absorb water, skin, detergent, storage and room air, so textile smell is often a mixture of material and context.
Read explainer ↗22EXPLAINERSmell & Body
Skin and hair have personal smell identities shaped by biology, washing, products, clothing and environment.
Read explainer ↗23EXPLAINERSmell & Architecture
Buildings carry smell through materials, airflow, age, occupancy and use—not just through deliberate fragrance.
Read explainer ↗24EXPLAINERSmell & Weather
Rain, heat, cold, humidity and wind can transform which smells become noticeable and how they travel.
Read explainer ↗25EXPLAINERSmell & Public Spaces
Public places combine materials, cleaning, ventilation, food, people and local routines into shared smell environments.
Read explainer ↗26EXPLAINERSmell & Hospitality
Hotels, breakfast rooms and guest spaces communicate through linen, food, materials, cleaning and sometimes deliberate scent.
Read explainer ↗27EXPLAINERSmell & Retail
Retail spaces can have smell identities built from products, packaging, materials, climate control and customer activity.
Read explainer ↗28EXPLAINERSmell & Workplaces
Workplaces combine paper, electronics, furniture, food, cleaning, ventilation and people into repeated daily smell environments.
Read explainer ↗29EXPLAINERSmell & Food Preparation
Cutting, heating, browning, fermenting and mixing can transform one food source into a very different smell identity.
Read explainer ↗30EXPLAINERSmell & Storage
Closed spaces, cardboard, textiles, dust and time can create strong storage-related smell identities.
Read explainer ↗31EXPLAINERSmell & Shared Interiors
Shared interiors combine cleaning, ventilation, materials, food, people and repeated use into one smell environment.
Read explainer ↗32EXPLAINERSmell & Personal Objects
Objects we handle often—pencil cases, towels, shoes, books and clothing—collect material, product and environmental smell cues.
Read explainer ↗33EXPLAINERSmell & Domestic Routines
Domestic routines create recurring smell landmarks through laundry, kitchens, bathrooms, storage, cleaning and weather entering the home.
Read explainer ↗34EXPLAINERSmell & Retail Materials
Retail environments often have native smell identities before any deliberate fragrance is added.
Read explainer ↗35EXPLAINERSmell & Rainy Objects
Rain changes everyday objects by adding moisture, cooling surfaces and carrying outdoor material smells indoors.
Read explainer ↗36EXPLAINERSmell & School Environments
School smell identities are built from paper, pencils, bags, classrooms, cafeterias, sports halls and repeated routines.
Read explainer ↗37EXPLAINERSmell & Temporary Spaces
Hotels, transit, parking and recently occupied rooms often feel distinctive because people encounter them briefly and with heightened attention.
Read explainer ↗Learn as downloadable data
Every course, lesson, word pair and classroom guide, with the Atlas entries, descriptors and VERIFIED claims it uses, by permanent identifier.