Your gut noticed something before your brain could explain it. Listening to it and leaving takes nerve.

Intuition is pattern recognition running ahead of language, built out of things you have seen before and cannot currently cite. That it has no argument attached does not make it wrong, and demanding an explanation before acting is how people talk themselves into staying somewhere uncomfortable. Leaving without a reason you can defend takes a particular kind of nerve.

If a situation feels wrong, treat that as sufficient and go. You can work out the why later, from somewhere safe. Nobody is owed a written justification for you deciding to leave a room.