I love the smell of spices. When I worked in a grocery store, I'd always want to stock the spices, or clean the shelves by the spices lol. Now when I'm grocery shopping, I walk down the spice isle nice and slowly
I also love the smell of vanilla and cinnamon in home baking. A lot of times I'll cut up an apple and put it in some water on the stove with cinnamon sticks, brown sugar, and a few drops of vanilla and my house smells good all day! It's my "fake" baking
I also love the smell of rain on summer nights.