Oh, the smells from the kitchen. They can fire up the heart and brain, in addition to the stomach.
Paul Graham celebrated food in life and in his writing... and then the celiac axe fell, and forced him to cut gluten out of his life entirely. He described the process of coming to grips with his new reality, in the book In Memory of Bread.
Paul eventually realized he was the same person, just fed differently.
He visited in 2016.