There isn't much we can do to help kids with bronchiolitis. The only treatment with any evidence favoring benefit is nebulized hypertonic saline, as this new systematic review shows. It decreases admission rate slightly and there is no down side. Why not?
Zhang L et al. Nebulized hypertonic saline for acute bronchiolitis: A systematic review. Pediatrics 2015 Oct;136(4):687-701.