首楞嚴義疏注經 3.223

3.223

互即雙亡破也。若汝不許鼻有二者，則香、臭混然都無有別，以從一鼻之所流故。若無香臭，說何為知名生識界？

This is a refutation on the ground of mutual identity causing both to vanish. If you do not grant that the nose is twofold, fragrance and foulness would be indistinctly mixed without any difference, because they flow from a single nose. If there are no fragrance and foulness, what could be spoken of as cognition and called the arising of the consciousness realm?