[SPOILER: After the bodies are dragged out and the tiles scrubbed and Eurycleia has run the servants through cloth and water until the floor comes clean, someone fetches sulfur from the storeroom. They burn it in braziers. The smoke is bitter, the kind that strips the inside of your nose and throat, and it climbs out the high windows carrying the ghost of death with it. It is the ritual cleansing the gods require. It is also a finite tool. The blood comes out of the stone. The deaths soak into the air, the light, the very shape of the rooms. No amount of sulfur could burn that away. Teilo writes the line flat. Sulfur does what sulfur does, and stops there.]
Sulfur
Bitter smoke from the storeroom. Burned in braziers to scour the hall. Strips the inside of your nose. Cannot reach what soaked into the air.