Smell has been polled as the least valued sense of the five senses. What would your world be like if you lost your sense of smell?
Guide will need: a scented object, hidden from the Explorer. Spraying perfume on a notecard works well!
Explorer: Close your eyes, and plug your nose by pinching it.
Guide: Raise the object you've chosen to your Explorer's nose.
Explorer: Slowly loosen the grip on your nose as you take in the scent.