Temperature switch triggers aversive memory- Cues to Odor Aversion?

Once bitten, twice shy -- a temperature switch triggers aversive memory: "It is common sense that it's worth learning what things and situations are harmful to us if we want to have a long and healthy life. For example, after getting a nasty sunburn, we learn our lesson, and apply sun cream before going sunbathing next time. The importance of such learned avoidance strategies is reflected by the fact that even fruit flies possess them. These tiny flies can learn to associate a particular odor with a mild electrical shock. Once they learned this association, they steer clear of the source of that particular odor in future"