The Downtown Disney's Christmas Store Scent, that was piped into the air system year round I ran into at my doctor's office yesterday! If your interested, Yankee Candle is selling plug in's and the scent is "misletoe". You can set it on how strong you want low, med, or high, we have it on low and our entire house has a faint hint of the fragrance. Also: I have asthma and so far no problems with this scent at all, and I have many problems with perfumes & candles, but so far OK!
We also bought the candle which is really nice too, but not quite as staying as the plug ins. I just keep picturing the xmas store and wish we where there instead of here at 0 degree's.