Many of us are so deeply drawn to bread that just the smell of it baking will have us salivating like Pavlov’s dogs. Some supermarkets capitalize on this by putting fresh, warm bread near the entrance to encourage us to grab a loaf as we pass by. Realtors sometimes advise home sellers to bake bread before a showing, filling the house with the aroma and supposedly enticing buyers. Jimmy Johns, a large sandwich chain that brags about their bread, has neon signs in the windows of their stores offering “free smells.” The aroma of baking bread beckons us.