[Ronaldus Magnus]

I have heard it said that even the demons are repulsed by sodomy.

http://www.sanctepater.com/2012/12/so-you-want-to-surrender-on-sodomite.html

Saint Catherine of Siena, a religious mystic of the 14th century, relays words of Our Lord Jesus Christ about the vice against nature, which contaminated part of the clergy in her time. Referring to sacred ministers, He says: "They not only fail from resisting this frailty [of fallen human nature] . . . but do even worse as they commit the cursed sin against nature. Like the blind and stupid, having dimmed the light of their understanding, they do not recognize the disease and misery in which they find themselves. For this not only causes Me nausea, but displeases even the demons themselves, whom these miserable creatures have chosen as their lords. For Me, this sin against nature is so abominable that, for it alone, five cities were submersed, by virtue of the judgment of My Divine Justice, which could no longer bear them. . . . It is disagreeable to the demons, not because evil displeases them and they find pleasure in good, but because their nature is angelic and thus is repulsed upon seeing such an enormous sin being committed. It is true that it is the demon who hits the sinner with the poisoned arrow of lust, but when a man carries out such a sinful act, the demon leaves."

[NorthMountain]

What I heard was probably derived from that vision.