Repository

Database

1.Core Database

1. OlfactionBase
Use: Integrated database of odors, odorants, odorless compounds, olfactory receptors, odorant–OR interactions, odorant-binding proteins, pheromone-binding proteins, and chemosensory proteins.
Access/download: Free open-access web server; curated database.
Citation/link: OlfactionBase is described as a free, open-access resource integrating odorants, ORs, odorant–OR interactions, and other proteins involved in olfaction.

2. HORDE — Human Olfactory Receptor Data Explorer
Use: Human olfactory receptor genes and pseudogenes; also includes OR repertoires in several vertebrates.
Access/download: Web resource; sequence and annotation browsing.
Citation/link: HORDE is described as a free online resource containing a compendium of OR genes and pseudogenes in human and four other vertebrates.

3. ODORactor
Use: Predicts potential olfactory receptors for small molecules; receptor–odorant prediction.
Access/download: Open-access web server.
Citation/link: ODORactor is described as an open-access web server for identifying odorant receptors for small molecules.

4. OdorDB
Use: Odorant molecules and links to olfactory receptor information; companion database integrated with ORDB/SenseLab resources.
Access/download: Web access.
Citation/link: OdorDB is listed as one of the companion databases integrated with ORDB, along with ORModelDB and OdorMapDB.

5. ORModelDB / OdorModelDB
Use: Molecular models of olfactory receptors and receptor–odorant interaction modeling.
Access/download: Web/SenseLab-associated resource.
Citation/link: ORModelDB is described as a companion database closely integrated with ORDB/OdorDB/OdorMapDB.

6. OdorMapDB
Use: Odor maps, olfactory bulb mapping, odor representation data.
Access/download: Web/SenseLab-associated resource.
Citation/link: OdorMapDB is included among the ORDB companion resources in SenseLab-related olfaction resources.

7. ORDB — Olfactory Receptor DataBase
Use: Vertebrate olfactory receptor genes and proteins; also includes other chemosensory receptors such as taste and pheromone receptors.
Access/download: Web database; individual sequence access/search.
Citation/link: ORDB is described as a repository of genomic and proteomic information related to olfactory receptors and other chemosensory receptors.

8. M2OR — Molecule to Olfactory Receptor database
Use: Curated database of olfactory receptor–odorant pairs; receptor response data; molecule–OR interaction evidence.
Access/download: Web resource; curated dataset.
Citation/link: M2OR is a database of olfactory receptor–odorant pairs and is focused on the combinatorial code of odorant recognition.

9. Pred-O3 database
Use: Integrated database and prediction server for odorants, odor descriptors, and olfactory receptors across human, mouse, and rat.
Access/download: Free web server; includes compiled molecule and receptor data.
Citation/link: Pred-O3 reports a compiled database of 5,802 chemicals with known odors and 385 olfactory receptors from human, mouse, and rat with known chemical interactions.

10. Chordata Olfactory Receptor Database
Use: Chordate olfactory receptor repertoire and comparative OR genomics.
Access/download: Web/database resource; exact download options depend on site availability.
Citation/link: Recent chordate OR database work is reported in the literature as a resource for chordate olfactory receptors.

2. Olfactory psychophysics, perception, and machine-olfaction datasets

11. Pyrfume
Use: Unified olfactory datasets across psychophysics, molecular odor descriptors, receptor responses, species, and modalities.
Access/download: Python package and data repository; pip install pyrfume; GitHub data.
Citation/link: Pyrfume is described as a unified framework for dozens of stimulus-linked olfactory datasets across species and modalities.
12. Pyrfume-Data
Use: Curated archive of olfactory datasets used by the Pyrfume Python library.
Access/download: GitHub repository; downloadable files.
Citation/link: Pyrfume-Data archives follow a subject/object design framework separating odor objects from subject behavior.
13. DREAM Olfaction Prediction Challenge dataset
Use: Molecular structure to odor descriptor/pleasantness prediction; benchmark for machine learning.
Access/download: Public challenge data/code.
Citation/link: DREAM Olfaction is a benchmark resource for odor prediction from molecular descriptors.
14. DREAM Olfactory Mixtures Prediction Challenge dataset
Use: Odor mixture similarity and odor-mixture perceptual prediction.
Access/download: Public challenge repositories and data.
Citation/link: DREAM mixture challenge datasets are widely used for computational odor-mixture prediction.
15. Dravnieks Atlas of Odor Character Profiles
Use: Classic human odor descriptor profiles for odorants; important for structure–odor and descriptor-modeling work.
Access/download: Often available through derived datasets such as Pyrfume or curated ML datasets; original atlas is not always freely downloadable.
Citation/link: Pyrfume and related human odor-prediction studies integrate expert-curated odor descriptor sources, including classic odor profile datasets.
16. Leffingwell Odor Dataset
Use: Expert-labeled odor descriptors for thousands of molecules; widely used in odor prediction and machine-learning benchmarks.
Access/download: Public curated dataset via Zenodo/NIAID Data Ecosystem.
Citation/link: The Leffingwell odor dataset contains 3,523 molecules associated with expert-labeled odor descriptors curated from Leffingwell PMP 2001.
17. Leffingwell PMP 2001 — Database of Perfumery Materials and Performance
Use: Perfumery materials, odor descriptions, performance, applications, and references to RIFM monographs.
Access/download: Commercial/subscription-type resource; derived datasets exist.
Citation/link: PMP 2001 is described as containing chemical identities, odor descriptions, performance, applications, and references for more than 4,100 perfumery materials.
18. New York Smells dataset
Use: Multimodal smell–image dataset for machine olfaction, cross-modal smell–vision learning, object/material recognition from smell.
Access/download: Research dataset; availability depends on project release.
Citation/link: New York Smells is reported as containing 7,000 smell–image pairs from 3,500 distinct objects.
19. ODOR dataset — Object Detection for Olfactory References
Use: Cultural heritage / visual olfaction dataset for detecting smell-related objects in artworks.
Access/download: Research dataset.
Citation/link: ODOR contains 38,116 object-level annotations across 4,712 images and 139 fine-grained categories.
20. Molecular odor taxonomy datasets
Use: Odor descriptor taxonomy, structure-based odor prediction, expert and data-driven descriptor grouping.
Access/download: Research dataset reported as made available by authors.
Citation/link: A recent study reports a full dataset and multi-layer expert taxonomy of 777 odor descriptors from the Pyrfume repository.