User blog comment:Yonkou Rome/Devil Fruit Logia - Water?/@comment-2109035-20101016221112/@comment-2109035-20101018210929

Smoker's is smoke, though. Smoke comes from fire; mist comes from water, fog comes from water, steam comes from water, but smoke doesn't come from water. Though they would have the same properties, they'd be different cause if Smoker can choke others with smoke, mist, steam, etc can make df users like Crocodile wet and vulnerable.