Synesthetic Interactions: Exploring the Multisensory Relationships Between Color and Scent in Human Perception

Abstract The article explores the intricate relationship between colors and odors through five experiments. These experiments were developed by researchers in the field of olfactory design and used in a public workshop held in Brescia titled Chromascent, as part of the event il Corpo Eterno, curated by Elena Abbiatici. The first experiment investigates the duration and characteristics of visual and olfactive memories, revealing a complex interplay between these sensory modalities. The second focuses on the influence of color on perceived fragrance purity, showing that color can affect the identification of pure scents. The third experiment examines the neurological connections between colors and smells, suggesting that congruent color-odor pairings enhance cognitive performance. The fourth study investigates the effect of color intensity on perceived scent intensity, yielding mixed results. The fifth experiment delves into the mental processing of a pleasant atmosphere, demonstrating the dominant role of visual stimuli and the significant impact of olfactory elements in shaping emotional responses and memories. This comprehensive study offers valuable insights into the multisensory nature of human perception, with practical applications for design fields including product design, packaging, educational environments, and interior design. These findings can inform the creation of multisensory experiences that are aesthetically pleasing and enhance cognitive function, emotional response, and memory formation.