Feelings aren't everything!
In my previous post, I want to clarify that I'm not referring to "feelings" of the emotional or sentimental type. The "sense" of Satan is primarily in the intellect. Sometimes negative emotions follow. Often, I don't "feel" anything. I just suddenly "know" something is spiritually very wrong, so I take action, by prayers, by avoidance, by removing myself if possible. I've been this way for as far back as I can remember; say, 2 1/2 - 3 years.
I rarely talk about it, even among fellow trads, because it has led to other thinking and then gossiping that I'm mentally ill, or myself under demonic influence, which I certainly am not!
Often, the place, person, object to which evil has attached itself is NOT discernible via the physical senses, or else it is, but is concealed at first. A few examples where later on, the presence of evil was confirmed. I was waiting at night on the sidewalk for a city bus. Everything I stood adjacent to a dry cleaning business, closed until morning, I "sensed" evil. If I moved away from the dry cleaner, about two storefronts down, everything seemed fine. I didn't give it much thought or try to analyze, I simply stood back from actual bus stop and jogged up to the bus when it arrived. It wasn't until I was in the bus and pulling away that I saw the upper floors of the building housing the dry cleaner. On about the 6th or 7th floor was the office of a psychic, the window lit up by a large flashing neon sign.
I've met people, yes, even traditional Catholics, whose outward appearance and demeanor looked fine, only to later discover what was wrong. A couple in their 60s, members of the Rosary Society, who allowed their 30 year old son to live in their basement with his male "partner." A young teacher who spoke sweetly, but was later dismissed when it came to light she was listening at night to death metal music, an avid fan. Conversely, there are times when a person whose physical appearance and demeanor is distasteful, but give me no dense of evil. This happens normally with non-Catholics. Most of the time, however, I never learn what's wrong.