Pollen is difficult to dislodge, burrowing down into the weave of fabric and insinuating itself into crevices. Inside our noses are delicate curled plates of bone known as the nasal turbinates, each covered in sticky soft mucosal tissue. Each time we draw breath, dust in the air is trapped here. As a result, the turbinates of a corpse contain a record of a person’s last breaths.