Their usage of building was a generic term of building. Not meaning apartment complex.
If you were opening the window and they have the AC on that’s more expensive that will piss people off. Same if they have the furnace running and you have the window open the winter that will piss people off. As one other poster suggested it might be a humidity issue. During the winter try adding some humidity to the air in your room and see if that helps. Not a lot of humidity just small amounts and keep incrementing and see if it helps.
There are also other medical reasons that could be affecting this. A medical doctor might help. Be warned on the medical doctor, though every medical doctor medical professional has a small Toolbox to work with. And they tend to get blinders. So you may have to do a fair amount of research yourself.
It’s missing a word
“Was” pissed in public
Or
Was pissed off in public
At least that’s how I read it