Interesting one this. I've spent years looking at UAP footage and honestly the same spatial patterns show up - certain areas get repeat activity, others nothing at all, and thats not random.
With orbs specifically I'd want to know if anyone's checked for EMF hotspots in the active rooms versus the quiet ones. Airflow and dust can explain some of it but not the consistency people report over months or years in the same spot.
My thinking is theres something environmental creating the conditions, whether thats temperature differentials, specific materials in the walls, or something we genuinely don't have good instruments for yet. The UAP research community has started taking localised phenomenon seriously for exactly this reason.
What are people actually seeing here - cameras picking them up or naked eye? Makes a big difference in how you'd analyse it. Would love to hear if anyone's done any systematic room by room comparisons rather than just noticing after the fact.