Why Does My Artificial Tree Smell Strange And How To Eliminate It

Every holiday season, millions of homes welcome an artificial Christmas tree as a convenient, reusable centerpiece of festive decor. But for many, the joy of setup is quickly dampened by an unexpected and unpleasant chemical or musty odor. If you've ever asked, “Why does my artificial tree smell strange?” you're not alone. This common issue affects countless households—and while it may be off-putting, it’s usually fixable. Understanding the source of the smell and knowing how to remove it can transform your tree from a stinky burden into a fresh, welcoming part of your holiday tradition.

What Causes the Strange Smell in Artificial Trees?

The odor from a stored artificial tree typically stems from one or more of three main sources: manufacturing chemicals, long-term storage conditions, or mold and mildew growth.

Most artificial trees are made from polyvinyl chloride (PVC) or polyethylene (PE), both petroleum-based plastics. During production, these materials are treated with flame retardants, plasticizers, and stabilizers—chemicals that help maintain flexibility and safety but often emit a volatile organic compound (VOC) smell when new or after prolonged storage.

Additionally, if your tree has been kept in a basement, attic, or garage, it may have absorbed ambient odors such as dampness, dust, or rodent droppings. Poor ventilation and high humidity encourage mold and mildew, which produce a musty, earthy smell. Even in clean storage, tightly packed branches can trap stale air and dust, contributing to an overall “closed-up” scent when unpacked.

“New artificial trees often carry a ‘new plastic’ smell due to off-gassing of VOCs. While generally not harmful in small amounts, the odor can be irritating to sensitive individuals.” — Dr. Lena Torres, Indoor Air Quality Specialist

Step-by-Step Guide to Eliminate Artificial Tree Odors

Removing the smell from your artificial tree doesn’t require expensive products or professional help. With patience and the right approach, most odors can be neutralized at home. Follow this comprehensive timeline to refresh your tree before display:

1. Unpack in a Well-Ventilated Area: Set up the tree outdoors, in a garage, or near an open window. Allow it to air out for at least 24–48 hours before bringing it inside. This initial step helps dissipate surface-level VOCs and stale air.
2. Inspect for Mold and Debris: Check each branch and trunk section for visible dust, cobwebs, or dark spots (signs of mold). Use a flashlight to examine hard-to-see areas.
3. Dust Thoroughly: Use a microfiber cloth or a vacuum with a soft brush attachment to gently wipe down all branches, starting from the top. Avoid aggressive brushing, which can damage foliage.
4. Clean with a Mild Solution: Mix one cup of white vinegar with two cups of water in a spray bottle. Lightly mist the branches (avoid soaking) and wipe with a dry cloth. Vinegar naturally kills mold spores and neutralizes odors without leaving a strong residue.
5. Deodorize with Baking Soda: Place open boxes of baking soda around the base of the tree or sprinkle a light layer on a tray beneath it. Leave overnight to absorb lingering smells.
6. Use Activated Charcoal or Odor Absorbers: Position activated charcoal bags or commercial odor eliminators (like Febreze Air Purifying Bags) near the tree for 24–48 hours post-cleaning.
7. Final Airing: After treatment, leave the tree standing in a dry, ventilated room for another day before decorating.

Tip: Never use bleach or ammonia-based cleaners on artificial trees—they can degrade plastic foliage and release harmful fumes.

Do’s and Don’ts When Treating a Smelly Artificial Tree

Do	Don't
Unpack and air out the tree before decorating	Set up the tree indoors immediately after storage
Use vinegar and water for gentle cleaning	Apply harsh chemicals like bleach or degreasers
Vacuum or wipe down branches annually	Ignore visible mold or musty patches
Store in a breathable fabric bag	Keep in sealed plastic containers that trap moisture
Use odor absorbers like baking soda or charcoal	Rely solely on air fresheners to mask smells

Preventing Future Odors: Smart Storage Strategies

Prevention is far easier than correction. The way you store your artificial tree after the holidays plays a crucial role in whether it will develop odors next season. Consider these best practices:

• Clean Before Storing: Always remove dust, pet hair, and any debris before packing away. Residual grime attracts mold and amplifies odors over time.
• Use a Proper Storage Bag: Invest in a durable, breathable fabric tree bag with zippers and handles. Avoid plastic bins or trash bags, which trap moisture and promote mildew.
• Choose a Dry, Climate-Controlled Space: Store your tree in a closet, under-bed container, or climate-controlled storage unit—not in attics, basements, or garages where temperature and humidity fluctuate.
• Add Natural Deodorizers: Tuck a few silica gel packets or cedar blocks into the storage container to absorb moisture and repel pests.
• Elevate Off the Floor: Place the bag on a shelf or pallet to avoid contact with concrete floors, which can wick moisture upward.

“A well-maintained artificial tree should last 10–15 years. Proper cleaning and storage after each season are key to avoiding odors and preserving appearance.” — Mark Reynolds, Holiday Decorations Technician

Real Example: How One Family Fixed Their Musty Tree

The Peterson family had used the same 7-foot artificial tree for eight years. Each November, they dreaded the sharp, mold-like smell that filled their living room upon setup. Despite wiping it down with a damp cloth, the odor lingered for days and triggered headaches in their youngest daughter, who had asthma.

After consulting a local indoor air quality expert, they implemented a full cleaning and storage overhaul. They disassembled the tree and vacuumed each section with a HEPA filter vacuum. They then sprayed a vinegar-water solution and let it dry in the garage for two days. Afterward, they placed the tree sections in a breathable canvas bag with four activated charcoal pouches and stored it in a closet on the second floor—away from basement humidity.

The following year, the tree had no noticeable odor. The family now repeats this process every January, and their tree remains fresh and safe for everyone in the household.

Frequently Asked Questions

Is the smell from a new artificial tree dangerous?

While the off-gassing of VOCs from new artificial trees is generally considered low-risk for most people, those with chemical sensitivities, asthma, or respiratory conditions may experience irritation. Symptoms can include headaches, dizziness, or throat irritation. To minimize exposure, air out the tree in a well-ventilated space for several days before bringing it indoors.

Can I wash my artificial tree in the washing machine?

No. Washing an artificial tree in a machine can destroy the foliage, bend metal frames, and create a fire hazard if water reaches electrical components (in pre-lit trees). Stick to surface cleaning with a damp cloth, vinegar spray, or handheld vacuum.

How long does it take for the smell to go away?

With proper airing and cleaning, most artificial tree odors diminish within 2–5 days. Strong chemical smells from new trees may take up to a week to fully dissipate. Persistent musty or moldy odors indicate deeper contamination and require thorough cleaning or, in severe cases, replacement.

Checklist: Eliminate and Prevent Artificial Tree Odors

Use this actionable checklist each holiday season to keep your artificial tree smelling fresh:

• ☐ Unpack the tree in a ventilated area (garage, porch, or near open windows)
• ☐ Inspect for mold, dust, or pest residue
• ☐ Vacuum or wipe down all branches with a microfiber cloth
• ☐ Spray with a vinegar-water solution (1:2 ratio) and wipe dry
• ☐ Place baking soda or activated charcoal near the base for 24 hours
• ☐ Let the tree air out for at least 48 hours before decorating
• ☐ Clean and dry all parts before storing
• ☐ Store in a breathable fabric bag in a dry, climate-controlled location
• ☐ Add silica gel packs or cedar blocks to storage for moisture control

Conclusion: Enjoy a Fresh, Scent-Free Holiday Tradition

Your artificial Christmas tree should enhance the holiday spirit, not disrupt it with strange odors. By understanding the causes—whether chemical off-gassing, mold, or poor storage—you gain the power to eliminate the problem at its root. Simple steps like airing out, gentle cleaning, and smart storage make a dramatic difference in both scent and longevity.

Taking a little extra time each year to care for your tree ensures it remains a safe, pleasant, and beautiful part of your celebrations for years to come. Don’t let a bad smell ruin the magic of the season. Act now, follow through, and breathe easy under your fresh, festive tree.

💬 Have a tip that worked for your smelly tree? Share your experience in the comments and help others enjoy a fresher holiday setup!