No you are not alone in this. It happens to me often enough to notice. My emotions, stressors, or envioronment seem to have no bearing. Its like taking a stroll eternity's flea market. Things I have never seen, objects from unidentifiable time periods, people with features I have never seen the likes of, but most certainly people.
Question have you had any instances of Clairvoyance. I have. It is not as strong as my clearcog,audience,sentience etc. It does happen. Maybe you/ we are opening up?
What I do is try to make out what it is, if i can't I let it go. Sometimes its very clear and something will be in the news or happen. A lot of time it seems like random junk, again like going through boxes in civilization's basement or something. If you find any links pertaining to this I would love to read. L&L