Odors

Odors are emotive, irrefutably powerful, deceptive in nature, contribute to our emotional behaviour, influence our mood and thoughts, virtually transport us to various locations and times in our memories. Odors are too complex, do not appear to be sufficiently ‘real' since they do not exist in the absence of a perceiving substance. The odors are encoded in the structural moiety of chemicals. When a substance releases chemical into the air, it gives off a distinct odor. Odors are too complex and have an insubstantial nature, a complex molecular basis, and are perceived individually. A molecule can have more than one odor associated with it.

OlfactionBase houses 106 primary odors, which are further classified into 572 subodors based on nine known aroma-classification systems (Wine, Perfumes, Urban odor, Drinking water, Waste water, Compost, Fragrance, City smell, Human Perception).

You may download full odorant dataset or search for specific odor.
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Primary Odor
Sub-Odor
Sr.No. Primary Odor Sub Odor CAS-ID’s Chemical Name
176 Alliaceous Onion 505-10-2 Methionol
177 Alliaceous Onion 505-29-3 1,4-Dithiane
178 Alliaceous Onion 513-53-1 2-Butanethiol
179 Alliaceous Onion 540-63-6 1,2-Ethanedithiol
180 Alliaceous Onion 541-31-1 3-Methylbutane-1-thiol
181 Alliaceous Onion 544-40-1 Dibutyl sulfide
182 Alliaceous Onion 554-14-3 2-Methylthiophene
183 Alliaceous Onion 556-64-9 Methyl thiocyanate
184 Alliaceous Onion 592-88-1 Diallyl sulfide
185 Alliaceous Onion 624-92-0 Dimethyl disulfide
186 Alliaceous Onion 628-29-5 Butyl methyl sulfide
187 Alliaceous Onion 629-19-6 Dipropyl disulfide
188 Alliaceous Onion 870-23-5 Allyl mercaptan
189 Alliaceous Onion 1629-58-9 Ethyl vinyl ketone
190 Alliaceous Onion 1639-09-4 1-Heptanethiol
191 Alliaceous Onion 1679-07-8 Cyclopentanethiol
192 Alliaceous Onion 2050-87-5 Diallyl trisulfide
193 Alliaceous Onion 2179-57-9 Diallyl disulfide
194 Alliaceous Onion 2179-59-1 Allyl propyl disulfide
195 Alliaceous Onion 2179-60-4 Methyl propyl disulfide
196 Alliaceous Onion 2550-40-5 Dicyclohexyl disulfide
197 Alliaceous Onion 23769-39-3 2,4,6-Trimethyl-1,3,5-trithiane
198 Alliaceous Onion 3268-49-3 3-(Methylthio)propionaldehyde
199 Alliaceous Onion 3658-80-8 Dimethyl trisulfide
200 Alliaceous Onion 4437-20-1 Difurfuryl disulfide
Showing 176 to 200 of total 281 entries