Now that we can use the internet to access almost anything you’d want to see and/or hear, we should make museums that archive different smells. You could find new smells you might have not experienced otherwise, or find some nostalgic smell to bring you back to a moment in your past.
When I went to buy fancy cologne for a wedding they had little bowls of coffee beans that were supposed to be palate cleansers. I cannot vouch for how well they worked, I felt like my nose was blown out after a few samples.