Looking for any insight or opinions....my 4 year old daughter for the last few weeks has been sniffling. It's a dry, quick in and out breath, thru the nose. Never is runny or wet. She does it on and off but more frequently while watching the ipad. (While resting ) I also notice her taking deeper breaths sometimes. It had me concerned so I called her cf doc who said we could try an allergy medicine. That didn't help. She isn't coughing and still plays, runs, does normal stuff. It just makes me worry because I don't know if she just does it for no reason, or Is this something? We have her clinic app next week. I've done extra vest treatments, her pulse ox is good. I also should mention that she has no complaints and when I ask what causes her to do it she says she doesn't know.