Dear friend: I was so concerned when I read about your little sweetheart's breathing problem. I have a little asthma myself, worked in the medical field for 20 years. Do you have rugs at home? That does not help. Dust, animals fur and milk yes milk contains a lot of bacterias. Did you try soya milk. It could also be allergies. But these testS are so traumatising for children. Rugs are very bad. They contain a lot of acarians those microscopic bugs that surround us and affect our breathing. A humidifier with a little eucalyptus oil in it (just a few drops in the water) vaporised in the room might help your little angel. I'll be praying for him! GOD BLESS YOU! mAY GOD HEAL HIM!