Your sense of smell has the best memory, which is why the smell of apple pie baking can conjure up thoughts of grandma's house, etc.
Having said that, my favorites include the smell of my Daddy. He always smelled so good. Always of Old Spice after shave. I still remember even though it's been well over 30 years and he died when I was 23.
Next, bread baking. I always anticipate the first slice slathered with sweet butter.
Then, the smell of the sheets on my bed after they were dried out on the line.
Lastly, the aroma of Thanksgiving/Christmas dinner cooking and the promise of tasty delights and the joys of time with my family and friends.
There are none better for me.
"As a girl I had zero interest in the stove." - Julia Child
This is real inspiration. Look what Julia became!