I have had a few panic attacks before and I 100% can see how a breathing excessive could trigger that. One of the things they tell you to do when having one is

I have had a few panic attacks before and I 100% can see how a breathing excessive could trigger that. One of the things they tell you to do when having one is slow your breathing and do the 5-4-3-2-1 technique (https://www.bradencenter.com/5-4-3-2-1-grounding-technique/ https://www.bradencenter.com/5-4-3-2-1-grounding-technique/). So if you usually associate slowing your breathing down with when you are having a panic attack it could trigger one for some people. For example, mine usually was triggered as soon as I laid down to go to sleep for some reason. I could fall asleep on the couch fine, but for some reason in the bed it was completely different.