Look into butekyo method aka oxygen advantage. If there isn't a medical cause like a mild allergy causing it, those breathing tools will help over time as your BOLT score rises.

If you are unresponsive to those, consider elimination diets for top allergens. A panic attack and a mild allergic reaction have a lot in common. 

 It's very interesting to read that because in fact if I have a problem, my nasal turbinates become inflamed, making it impossible for me to breathe 100% always, I usually always have one nostril blocked and when both are blocked it's horrible.

Please tell me more