ISCIENCE, sa.113455, ss.1-14, 2025 (SCI-Expanded)
The hedonic perception of odors is similar worldwide. However, our perception of smells is much more than
just determining whether an odor is pleasant or not. Here, we expanded this assessment by recruiting 909
people from 16 regions of the world and measuring 12 perceptual dimensions (e.g., pleasantness,
intensity, edibility), which were aggregated into an olfactory perceptual fingerprint. We used two
fingerprints: descriptor-specific and odor-specific. Age, gender, and region explained 1.1%, 0.3%, and 9.6%
of variance in the descriptor-specific fingerprints, respectively. Similarly, age, gender, and region explained
0.5%, 0.3%, and 8.2% of variance in the odor-specific fingerprints. Interestingly, odor intensity was more
regionally dependent than pleasantness. Thus, olfactory perception across the globe may be better differentiated
by odor intensity than pleasantness. Although there is some influence of individual and cultural backgrounds,
human perception of odors appears to be quite similar worldwide, even when assessed using 12
perceptual dimensions.