I'm having a "brain-fart" on how to grammatically and otherwise correct (proper) way of saying "to be oblivious to" or "to overlook something familiar" because of a recent appearance change.
For ex: My boyfriend's dirty work belt went through the laundry, and because it was no longer dirty, and looked brand new again, he totally overlooked it, and was oblivious to it being on top of the dresser.
I know there's another way to say that the right way, but can't remember it.