Orbs on Greg's Creepy Crawl Tour

As it was built in 1900, I suppose my apartment is haunted (not haunted is the exception in Savannah) but in nine months the only thing I've heard "go bump in the night" is me fumbling with the door key after last call at Pinkie Master's. They tell me this is the most haunted room on the second floor of Moon River Brewery, but there's nothing strange in this image.
Three minutes later and the camera picks-up a couple of orbs.
Oh, there's another one, looking up the east stairway to the third floor.

I offer no explanation, but dust on the lens would appear in every frame, no?

Call to reserve a spot on Greg's Creepy Crawl walking tour. Great stories told in and between five different bars during an evening stroll in Savannah's Historic District.