Manners: huffing/coughing and apartment living, hotel stays
I wouldnt bring it up either. Like Mel said, it could make things worse and they might make a big deal of it if they know something is going on. If they have concernns and come to you, then possibly tell them, based on your comfort level, but I wouldnt bring it up. I DEF wouldnt bring it up in ahotel room, b/c its not like you have to live near them, and will have to deal with them for a long time. I would think if you live in an apt complex, your neghbors will be more concerned with what they hear as in, how you are doing....at least a good neighbor would hopefully be that way.
Good Luck with your new apt!