I think the electromagnetic spectrum is a good example of this...If you look at how tiny a portion of it is actually visible to us, it can be daunting to think about how much is going on around us in the parts of it we can't see...and which undoubtedly have some effect on us. Even in the visible portion, our inability to resolve things at the microscopic level leave us blind.
Anyone who's ever been stricken by the flu virus certainly can attest to the fact that our lives can be heavily impacted by things we normally can't sense...
I wonder just how much is within our cognative range but is either filtered out or relegated to background status, unrecognized. If we could learn to pick out and assign true import to what we do sense, human intellectual advancement would take an enormous leap.
I have personal story that is counterintuative and has puzzled me for thirty years. In 1973 I was talking to a group of friends and Lyndon Johnson's name came up in the course of the conversation. Out of nowhere I said "LBJ will not survive the day". Even I was surprised at the statement as he had been out of office for years, was low profile, and had not been in the news. Aside from a couple of startled looks the subject went no further. He died that afternoon.