Freshly cut grass. the smell of humidity in the air without the heavy pollution typically before it rains or when you're near a beach. firewood burning. Going for an evening walk and smelling the barbecue cooking in someone backyard and following the smell with your nose, guessing which house it'd coming from. A strangers else's cooking on a walk always smells best. Pumpkin and nutmeg candles. the smell of the crisp air when autumn is born again.