Our beautiful Belgian Shepherd developed a collapsed Larynx and Trachia when she was seven. She used to cough but also pant very rapidly and then collapse.
She had a tie back which helped a lot, but we had to be very careful not to over-exercise her (not more than twenty minutes!) and we had to have her clipped to keep her from overheating. We had to give smaller regular meals, and make them moist so she wouldn't cough.
Despite a ceiling fan where she slept, she suffered very badly from heat, and our Vet suggested she might be better sleeping in our garage.
She had a couple of bouts of Pneumonia and had fits, resulting in emergency Vet treatment, but we managed to keep her going for another three years
Sadly she went to the Bridge last year, but she mostly enjoyed life despite all the restrictions!