No, really. I know this is a technical violation of the rules of nitpicking in that no non-canonical extra source material shall be used in explaining a nit. That said, John Byrne’s 1986 seminal work on the origins of Superman have been the basis for the character for most Superman canon since its publication. Here is the panel in question that specifically states Superman has Super Cleanliness in his power set.

Written by John Byrne
Penciller John Byrne
Inker Dick Giordano
Letterer John Costanza
Colorist Tom Ziuko
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