On Sunday, I bought a bouquet of chamomile flowers at Whole Foods for five dollars. After trimming them down, I bundled them into a stainless steel tumbler and put them on a stack of books beside our kitchen doorway. Almost every time I walk to and from the kitchen, I bury my face in the buds and inhale deep. The scent is one of earth. It’s subtle and grounding. The fragrance carries little of the sweetness that you might find in the petals of a rose, but the chamomile scent makes me feel calm and clear in a way that very little has this week. The whole world knows of…