血腥

血 = 丶 + 皿 : Mnemonic symbol: blood transfusion.

Xu Xian hurt himself and needs to get a blood transfusion in the elevator's bathroom. He found a petal leaf as donor, which is bleeding droplets into a bowl; Xu Xian gets the blood from the bowl as infusion using some tubes.

腥 = 星 + 月 : Marie Curie (xi) finds that the moon (月) crashed on the earth in front of the engine ((e)ng1). She investigates the case and concludes that the moon was hit and killed by a satellite (星) which is still stuck into its head. The moon is reeking with blood (腥) where the satellite hit it. Because it has been dead for a while it stinks quite fishy (腥).