Coughing is not uncommon when giving a nebulized medicine. The medicine can easily irritate the back of the throat. Be sure the person is holding the nebulizer correctly in the mouth. Also, you can stop the nebulizer for a few minutes until the person stops coughing, then restart the treatment. If the coughing continues with each treatment, tell the person’s doctor.
When a person inhales steroids through a nebulizer, there is the risk of a yeast infection of the mouth. It appears as a white patchy coating of the tongue with some swelling of the tongue. It looks a bit like cottage cheese.