Comment by qingcharles

Smells really get embedded into your conscience from early days. I remember as a kid really loving the "Smell-O-Vision" movie they had set up at La Cité des Sciences et de l’Industrie in Paris. As you watched they had little aerosol cans labeled with different scents ("baking bread" etc) that a mechanism would squirt towards the viewer.

I found this History of Smell-O-Vision paper too today:

https://pmc.ncbi.nlm.nih.gov/articles/PMC7691926/