Smells and emotional associations

How do associations and past experiences influence the perception of scents? Is the initial association so strong and profound that it's irreversible? Can new associations supplant old ones ingrained in memory? Which scent associations are the strongest? The first associations are the strongest. Lawless and Engel's 1977 analysis demonstrated that once an association with a particular scent is established, it becomes difficult to associate that scent with anything else. Their review confirmed that the first association about a given scent conflicts with subsequent associations evoked by that aroma. Furthermore, new associations have little chance of overcoming old ones. They only marginally succeed in displacing them. What is associative learning? The theory of acquired olfactory perception is based on associative learning. It is a process in which certain events or objects are linked to others through past experience. Associative learning is responsible for behavior and much of the knowledge humans acquire. To better understand this concept, let's consider an example. There is a stimulus. Let's say it's X. Let's say the response to X is X+. Another stimulus, Y, enters this system. There is no response to the stimulus. We add X and Y. When stimulus X is activated, the response is X+. When stimulus Y is activated in this pair, the response is also X+. Stimulus Y has taken on the characteristics of the response to stimulus X because stimulus X was previously associated with Y. What is olfaction according to associative learning? This theory suggests that smell is like a tabula rasa, a blank slate. Smell takes on meaning when we associate a scent with a context. Smell then captures the associations from that context. What is the role of emotions in relation to the associative process? The hedonic perception of scent is manifested through acquired associations between scent and emotions that arise upon first encountering a specific scent. Again, this is best illustrated with an example. We perceive a new scent in connection with an emotional event in our lives, such as a hospital surgery that triggers fear and anxiety. The scent acquires the emotional meaning of fear because we associate it with anxiety. We perceive the stimulus as unpleasant. We also have unpleasant associations with hospitals, which leads to a disliking of the hospital smell. Pleasant associations, on the other hand, stand in contrast. If we encounter a new scent during a meeting with someone close to us, it acquires positive qualities and evokes pleasant connotations. Why do we like some smells and not tolerate others? The history of associations with a particular scent is to blame. Emotional connotations don't always have to come from direct experience. Some are provided by, for example, culture. We don't have to be burned to know that fire is dangerous.