Memory refers to the three major processes involved in its function: encoding, storage, and retrieval. From new memories, information must be changed into a usable form, which occurs through the process known asencoding. One information has been successfully encoded, it must be stored in memory for later use. Much of this stored memory lies outside of our awareness most of the time, except when we actually need to use it.
The retrieval process let us bring stored memories into conscious awake.The sense of smell is closely linked and connected with memory that probably more so than any of our other senses.
Those with full olfactory function may be able to think of smells that evoke particular memories; the scent of an orchard in blossom conjuring up recollections of a childhood picnic, for example.
This can often happen spontaneously, with a smell acting as a trigger in recalling a long-forgotten events or experiences. Marcel Proust, in his ‘Remembrance of all Things Past’, wrote that a bite of a madeleine vividly recalled childhood memories of his aunt giving him the very same cake before going to mass on a Sunday
We have take our sense of smell in our daily lifes for granted, and think we really rely on our eyes and ears. Smell has been an integral part of evolution and survival of the fittest for our species in the past. Although humans rely less now on smell for survival a huge importance is still placed on smell today for taste enjoyment and attracting a partner through use of perfumes.
Online Sources:
psychology.about.com/od/cognitivepsychology/a/memory.htm
fifthsense.org.uk/what_is_smell/psychology/
air-aroma.com/blog/why-is-smell-important