That's an interesting exercise. I also have trouble with 'look', 'see' and 'watch', although that may be because I visualise things clearly and can put the visions into words rather than because sight is my dominant sense. I would have said that smell is most important to me; many of my strongest early memories centre around how things smell. I'm not sure if I could write a story that favoured smell. That would be difficult. In a way, I translate the smells into sight.