Sure. I'm a good speller but there are a few words that I learned the wrong way and had a blind spot for. I discovered I had been spelling them wrong all my life when Word kept underlining them in red.

In related news, Japanese teachers lament the fact that predictive text entry systems on their students' phones mean that they don't know how to write kanji anymore. They can recognize them, but don't have enough practice to write them consistently anymore.