Does this sound like it could be anxiety as well? I am diagnosed with generalised anxiety disorder as well

I have been suffering with shortness of breath for many years I am (25M) this started around age 8, I also do have a form of Tourette’s I should say, I have had vocal and facial tics since around that age , also a persistent cough/throat clearing tic , I always feel the need to throat clear or cough to get a full breath, if I don’t throat clear or cough, I get this uncomfortable suffocating feeling in my chest and throat, and I’m in need of a constant urge of taking a deep breath , so after I am okay with a Few normal breaths on my own , but then the feeling of suffocation intervenes and I will need to throat clear / or fake cough or sometimes even a squeak like tic sound outwards to feel the need to be able to get a deep satisfied breath in 

Some of my tics and suffocation feeling feel worse after eating anything with “spices”milk”onions”tomatoes products
I have been tested for asthma but apparently everything is fine 

Also my shortness of breath gets worse around harsh perfumes or anything strong smelling , also around my dogs/cats?

And again I’m not allergic too animals as far as I know  , so I can’t figure out why I have had this for many years :( and I don’t know what to say or describe to my doctors other then they say it’s anxiety related , but I’m like this 24/7 without being anxious , and gets worse with certain foods I eat or drink 

It feels like I can’t take a deep breath in” 24/7 but if I drink or have anything with milk in it , this feels 10 times worse ,

It gets that bad , I sometimes can’t even have a full conversation without pausing in between and throat clearing or fake cough, or squeaking tic”  like I want to get all my words out fast ?

Any help or incite would be gratefully appreciated I’ve suffered with this for so long