Air Pollution and interpersonal Attraction1

It was predicted that negative affect associated with one component of air pollution (malodor) reduces attraction toward both similar and dissimilar strangers. In one experiment, 27 subjects rated attitudinally similar or dissimilar strangers while confined in a room whose atmosphere was ambient (no‐odor control) or polluted by ammonium sulfide. Contrary to predictions, similar strangers elicited greatest liking in the polluted atmosphere. It was suggested that air pollution had increased attraction for another who might be experiencing the same disagreeable situation (i.e., “shared stress”). In a second experiment, this suggestion was examined by assuring subjects that they were alone and would not meet the similar or dissimilar person they rated. As predicted, exposure to either ammonium sulfide or butyric acid combined additively with attitudinal dissimilarity to depress liking, mood‐affect, time spent in the setting, and ratings of the environment. These results were viewed as consistent with the reinforcement‐affect model of attraction, but it was cautioned that the effects of air pollution may depend on social factors, such as shared stress, and dosage level of the pollutant.