I removed wallpaper in our bedroom today and used about 1/2 cup brown vinegar in about a quart of warm-hot water and put it in an old spray bottle.
It worked fantastically. Don't worry about any kind of smell. The smell of vinegar dissapates very quickly. I speak from experience on this matter. Since I was a child, I have always used brown vinegar on sunburns, and it never smelled for more than a few minutes.