Odors in artificial trees can be caused by various factors, including:

Storage Conditions: If the artificial tree has been stored in a damp or humid environment, it can develop mold or mildew, leading to unpleasant odors.

Material Quality: Some of the materials used in the manufacturing process may emit odors over time, especially if they contain chemicals or adhesives.

Accumulated Dust: Dust and dirt buildup on the tree's surface can trap odors and contribute to a musty smell.

But don't worry, here are some recommendations to help you get rid of the odor in your artificial tree. 

1. Air Outdoors: Take the artificial tree outdoors on a dry, sunny day. Allow it to air out for several hours, preferably in a well-ventilated area. This can help dissipate any trapped odors.
2. Baking Soda: Sprinkle baking soda over the surface of the artificial tree and leave it overnight. Baking soda is known for its odor-absorbing properties. Vacuum the baking soda off the tree the next day.
3. Vinegar Solution: Mix equal parts of water and white vinegar in a spray bottle. Lightly mist the artificial tree with the solution, focusing on areas with strong odors. Vinegar is a natural deodorizer and can help neutralize unpleasant smells.
4. Fabric Refresher: Use a fabric refresher spray designed to eliminate odors. Spray the artificial tree lightly and allow it to air dry. Be sure to choose a product that is safe for use on artificial materials.
5. Activated Charcoal: Place activated charcoal in a breathable container near the artificial tree. Activated charcoal is highly effective at absorbing odors and can help freshen the air around the tree.
6. Clean Surface: Wipe down the surface of the artificial tree with a damp cloth or sponge to remove any dust or dirt buildup. Pay special attention to crevices and folds where odors may be trapped.
7. Essential Oils: Add a few drops of your favorite essential oil to a spray bottle filled with water. Lightly mist the artificial tree with the scented water to impart a pleasant aroma while also helping to mask any lingering odors.

By using these methods, you can effectively eliminate odors from your artificial tree and enjoy a fresh, clean scent in your home or space.