香皂

香 = 日 + 禾 : Mnemonic symbol from 香草, spices.

Just as the sun is not looking Marie Curie plays a prank on her in front of the anglepod and puts some spices in her bowl of cereals.

皂 = 白 + 七 : Zorro (z) is fighting for the public good in the aorta's bathroom (ao4). Anyone who's stinky or black (皂) with dirt is forced under the shower, threatened by Zorro and his seven-branched laser sword (七). They will wave with a white flag (白) and readily take his soap (皂).