Fascinating thread - I wasn't there myself (Sussex is a long way from Kentucky!) but I've been following Waverly Hills closely for years and what you're describing rings very true to me.
The atmospheric pressure changes people report in that building are unlike almost anywhere else I've encountered in my research. Some investigators I've spoken with describe a sort of heavy awareness, almost like being watched from multiple directions simultaneously. Would that match what you felt?
A few questions if you don't mind:
Did you have any equipment running at the time - K-II meter, REM pod, anything like that?, Were you on the fourth floor or the body chute area when it happened?, Did anyone in your group feel it, or was it just you?
I ask because there seems to be a pattern with shared experiences at Waverly - multiple people registering the same sensation at precisely the same moment, which I find far more compelling than individual reports. It rather challenges the ". It's all in your head". Dismissal, doesn't it?
I had a vaguely similar feeling years ago at a location here in East Sussex - that unmistakable sense that the air itself had changed quality. Never quite forgotten it.
Would love to hear more detail from anyone else who was on that particular visit.