I'm trying to find any info about a black and white (therefore I assume 1950s or 1960s) TV show episode where the protagonist can see aliens that everyone else can't see and these invisible aliens are experimenting on humans as the humans go about their day unaware. Like one experiment might have had some alien contraption on a person's head and they say something about having a headache or such.
I thought it might have been a The Twilight Zone or The Outer Limits episode, but if it is then I can't figure out which one it is. Does this description ring a bell for anyone?
Edit: I recall the protagonist (a man) walking through a bar talking to different people as he went. The bar was on the left of the screen and each person mentioned some ailment they had but he couldn't see the aliens yet. Later he walks the opposite direction through the bar but can now see the aliens and their devices on people. The vibe was disturbing, not light-hearted, like anything could be more horrible than we imagine. I don't think the show was meant for child audiences, though I saw it as one and I think it has stuck in my head because it seemed so disturbing. I probably would have seen it in the mid or late 80s but I grew up watching much much older shows (ie Leave it to Beaver, Dragnet, I Love Lucy, etc). The show was in English and would have been some type of re-run aired on an American TV station (unsure if it was broadcast or cable).