煤屑

煤 = 某 + 火 : Mahatma Gandhi (m) is looking for some food in the Eiffel Tower's kitchen (ei2) when a fire (火) breaks out at the coal (煤) store and blocks the way down. To stay calm Mahatma Gandhi grabs a ukulele and plays "somewhere over the rainbow" (某).

屑 = 尸 + 肖 : Marie Curie (xi) and the little prince (肖) are frequently visiting a ghost (尸) in the elevator's bathroom (e4). The ghost is feeding on their dandruff (屑), therefore it's a win-win situation for all of them, but secretly they feel it beneath their dignity (不屑).