i have a cat with asthma (my second cat with asthma!)
he is allergic to pollen, mold and a few other things, probably,
his asthma is mild and controlled with anti histimines right now but if it gets worse, he'll need other meds
the best thing for cat allergies and asthma is to avoid triggers as much as possible
food can aggravate asthma, and i would consider that the salmon may be the culprit as fish is high on the list of things that cats can be allergic to
But food can also be triggers for asthma. An allergic reaction can develop to foods that have been fed for years but the allergy may reveal itself with a sudden onset. Once an allergy has developed, the sensitivity to the ingredient may last a lifetime, so foods containing that ingredient will need to be left out of the diet permanently.
Wheat, gluten, milk, (and all dairy products) along with fish/tuna and the preservatives that are added to cat food are among the top triggers. " end QUOTE
here is a link to that article:http://www.felineasthma.org/triggers/index.htm
another great site about feline asthma is this one:http://www.fritzthebrave.com/
there is a short video clip of Fritz the cat having an asthma attack, that is how i learned that my boy had asthma, because he does not have the wheeze like my other asthmatic cat did
he coughs , and i was sure it was not hairballs! this video can show you what the difference is and how the cat even looks different with this cough
plus it looked like my boy had hiccups but it turns out that was his diaghram (SP?) pushing the trapped air out of his lungs
you're right, asthma attacks are scarey!! and they can be just as serious in cats.
i hope your kitty doesnt' have asthma but i'm sure you'll want to check into it and talk it over with your vet