Yep that is the newest trend. Of my 3 children, 2 had a lot of problems with croup. My son seemed to respond to the warm moistness, but when his sister came along 5 years later, she responded to the cold moistness. Her last really bad attack happened when she was about 5. She is now almost 28 and still talks about the night she and daddy sat on the front porch in the middle of one January night throwing snowballs into the yard! (In reality, it was daddy throwing the snowballs in an attempt to ease her fright at not being able to breath until the cold eased her breathing.