I am kind of in the same boat. My wife claims she is allergic to pine... Every year we got a blue spruce because they give off the most smell and it was tradition and all that. Every year my wife would complain about can't breath, stuffed up, eyes watering, and all that nonsense.
Well last year we tried out some duglass fur (I am pretty sure) which "sweats less" so it gives off less aroma and pine tree stuff. My wife said she felt much better and is ok with getting that same kind of tree every year now.
I too like the smell in the house and it make christmas feel more real.