My dog responds to swear words by doing the kinds stuff you see emotional support dogs do in videos- press on your chest, give you kisses, nuzzle your face, etc.
Except she's small, blind, and a bit... intense, so she kinda launches into you if you're sitting, with some intense affection.
IDK why. I guess we don't swear very often, ao when we do, its special, and we swear with enough gusto for her to think we're very, very upset.
Yeah, the doggy door bell turned into the "Attention" bell instead of the "Outside" bell for a while for us.
Then when she realized we made her go out every time, she stopped using it and went back to a little wuffle.