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The sweet smell of nostalgia
Whether freshly cut grass or school dinners, there are certain odours that have lodged themselves in our emotional memory, instantly invoking a wave of nostalgia on first whiff.
Yaara Yeshurun and colleagues from the Weizmann Institute of Science in Rehevot, Israel, carried out a study on 16 adult volunteers to try to find out why early smells are so evocative.