Think about a favorite vacation. Maybe go back to a memory from childhood. Recall a scent that you can associate with the experience; the sea air, cooking oil and spices from a walk through a night market, a bakery in an unfamiliar neighborhood, the smell of the rich earth during an extended bike ride, tropical flowers opening up along the road on an island getaway. Remember where you were, where you were going, what else you did that day, who you spent time with (or not). Recreate the scent in your mind. Imagine breathing in the atmosphere of the place in your nostrils. Write a few paragraphs about that experience, following your sense of smell to bring it alive for you.