That's a difficult question to answer definitively, as different people have different preferences when it comes to scents. However, many people find the smell of pine, cedar, and spruce trees to be particularly pleasant and reminiscent of the holiday season. Some people also enjoy the scent of fresh-cut Christmas trees, as they often have a unique fragrance that is not found in artificial trees. Ultimately, the best way to determine which Christmas tree has the best scent is to visit a tree lot or store and take a whiff!