Based on the articles below, please provide an explanation about " Smells are often tied to memories and emotions, and the absence of this sensory experience may be emotionally challenging"

Please provide as much detail as possible. feel free to use other sources but please provide references.

Smells Ring Bells: How Smells Can Trigger Emotions andMemories

https://lions-talk-science.org/2014/10/08/smells-ring-bells-how-smells-can-trigger-emotions-and-memories/

Smells, Emotions and Memories:A Hypothetical Replication and Investigation of a Mediation

http://arno.uvt.nl/show.cgi?fid=153033

The importance of emotions for space. The smell and emotional memory, the space and emotion

https://www.politesi.polimi.it/handle/10589/121979

The Emotional Distinctiveness of Odor-evoked Memories

https://academic.oup.com/chemse/article-abstract/20/5/517/273244

Understanding smellscapes: Sense-making of smell-triggered emotions in place

https://www.sciencedirect.com/science/article/pii/S1755458620300578?casa_token=S6BeBoFWmEIAAAAA:FO0wim9ChMvuLiafuTqhCW6taVHO4PZHcxdzaXMbyJyIHpCpP8BJ4XS2DF-52btuKVnEhvDKm4w