My seven year old Zada has a collapsed trachea. The first Vet. put her on surolan drops which didn't help her at all, so I took her to Dr. Ortega here:
Theresa M. Ortega | Veterinary Medical And Surgical Group (VMSG) and she ran all the right tests. She put her on SAC Coll Trach Elixer that only a chemist can mix then it was mailed to me. This works so well, but once in awhile she makes noises breathing. Dr. Ortega said if she gets any worse they will prescribe an inhaler which comes with a mask.
Keep your baby cool, because when they get too warm, it makes breathing difficult. Also make sure you use a humidifier in the home because dry air is also a trigger. Don't walk your baby anymore. The dirt and dust is very, very bad for these guys with trachea problems. Don't dust, sweep or run a vacuum in the same room they are. When you first come home, don't say anything right away that would excite her. Just be very casual. Try and keep her as quiet as possible and not let her have toys that would excite her too much either. It seems these guys with a collapsed trachea end up with enlarged heart and liver. All we can do is keep them as calm as possible.