Sensitivity to the cognitive and affective qualities of odours

Abstract

This study examined cognitive and emotional responses to odours in the laboratory in relation to everyday attitudes toward odours. A total of 136 subjects completed a questionnaire about the role of Odours in Everyday Life (OELQ) and their responses were summed to develop an index of overall responsiveness to odours: 36 subjects, who were in the top and bottom quartiles on this index, rated pleasant (e.g., rose) and unpleasant (e.g., synthetic sweat) odours in the laboratory on 7-point scales. Separate factor analyses were done for the OELQ items and the laboratory ratings, and these factors were intercorrelated. The factor analysis on the OELQ data yielded three primary factors, encompassing the Sexual Role of Bodily Odours, Ecological Odour Sensitivity, and Odour-evoked Memories, as well as three secondary factors. Two factors were derived from the laboratory ratings contrasting Cognitive (sensations, images, memories) and Affective (pleasant, soothing, energising) Responses. Correlations among the factors showed that Ecological Odour Sensitivity in everyday life was correlated with strong Cognitive but weak Affective Responsiveness to the laboratory odours. In contrast, the Sexual Role of Bodily Odours (OELQ) was positively correlated with Affective Responses to the odours in the laboratory. These data underscore the dual role of odours in stimulating cognitive and affective reactions both in everyday life and in the laboratory.