What’s really aggravating is when the person wanting to open windows when the indoor temp is 65 because it’s “too hot” is the same person who wanted the windows opened last summer because it was “too cold” with the temp set at 75.
I had the same problem with my ex (still have in fact, since she sometimes comes at my place, last time in december, and she still couldn’t help opening the windows, generally at night, when it’s even colder).
However, I became convinced over time that her feeling of being “unable to breathe” was real. Where did it came from, I couldn’t tell, but I’m sure she wasn’t making it up.
I’m not saying she is actually unable to breathe, but that she genuinely feels this way.