Thanks for your prompt response, my friend. Though it may be that my vision is impaired, for this native speaker of American English, “in us” and “inside us” appear to be indistinguishable. What say you? Incidentally, where I’m at it is 4:00 a.m. and except for those working, it appears to me that only insomniacs and vampires are up and about. And I’m not an insomniac. On second thought, “inside us” might well convey a physical and corporeal location, more so than “in us." What say you?