Just before an open house, Vail real-estate agent Chris McDonnell picks fresh lavender, pictured, or another fragrant herb from his garden. He looks for scents that mimic the outdoor lifestyle he's ... more 

Just before an open house, Vail real-estate agent Chris McDonnell picks fresh lavender, pictured, or another fragrant herb from his garden. He looks for scents that mimic the outdoor lifestyle he's trying to sell. (Photo credit: Thinkstock) less