Standing in the shower, waiting to dry, I exhale. A smudge of fog appears on the glass door, expanding as my outbreath continues to blow hot air against its surface. The edges of the condensation grow unevenly, with rounded front forces, like bacteria multiplying in a petit dish. There is a brief pause just as I’ve expelled all the breath I have, and then I inhale, and the opaque shape starts to shrink. All the bacterium that were born just seconds ago, die in mass