Your nose can recognize thousands of scents, but some smells are much harder to tell apart than others. To test this, collect items with strong scents — coffee, chocolate, garlic, and mint are good choices. Place each in a separate container with a hole in the lid. Blindfold a volunteer and ask them to sniff each container, guess the item, and rate how strong the smell is. After testing several people, compare the results. Common and distinct smells like coffee and chocolate are easier to identify. Similar smells like sawdust and pencil shavings are often confused.

Your nose can recognize thousands of scents. But some smells are much harder to tell apart than others. Common scents like coffee and garlic are easy to name. Similar smells like sawdust and pencil shavings are often confused. This shows that olfaction works best with strong, distinct scents.