'As an early proponent of using historic smells to enhance the visitor experience, the Jorvik Viking Centre set an example for other museums to follow. ‘Museums have started to use olfactory information in order to engage audiences more than is possible with just visual information, and also to help audiences to retain that knowledge for longer,’ Strlič says.'

https://www.chemistryworld.com/features/the-smell-of-history/4016790.article