Previous research has shown that individuals with a diagnosis within the autism spectrum
(ASD) experience a greater sensory sensitivity, but few studies have investigated the olfaction
sensitivity. The aim of the present study is to gain a deeper understanding of the olfactory
functions in adults with ASD.16 participants with ASD (14 controls) participated in the study
where sniffin sticks were used to evaluate the differences between the groups. All participants
answered a questionnaire about perceived olfaction sensitivity and the adult spectrum quotient;
AQ. Olfactory discrimination and identification (with and without cue) did not differ
between the groups, as for olfaction sensitivity, perceived pleasantness, intensity and edibility.
When it came to self-assessed olfactory sensitivity, differences were found. However, this
self-rated sensitivity did not appear in the standardized odor tests, where no significant differences
between ASD and controls odor features were detected.