Swedish Snus is cold-cured, while other dip is heat-cured. It is well established that partial combustion of organic matter creates a bunch of different carcinogens. With cigarettes, you are inhaling partial combustion products from plant matter that has already undergone partial combustion once, and you have astronomical cancer risk. With dip, you are putting partially combusted plant matter in your mouth and have quite high cancer risks. With swedish snus, you are putting zero partial combustion, and no discernible cancer risk.