When blankets develop an unpleasant odor after storage, it's primarily due to moisture trapped in the fabric, even if it wasn't noticeable when they were first put away. In storage, this moisture combined with a lack of airflow creates the perfect environment for mildew and bacteria to thrive, resulting in those characteristic musty or stale smells.
Why Blankets Develop Odors in Storage
Several factors contribute to blankets smelling unpleasant after being stored, all stemming from the interaction of environmental conditions with the fabric.
Moisture and Mildew Growth
The leading cause of odors in stored blankets is residual moisture. If blankets are not completely dry before storage, even trace amounts of dampness become a breeding ground for mildew and mold spores. These microorganisms rapidly multiply in dark, enclosed spaces, metabolizing organic material in the fabric and releasing volatile organic compounds (VOCs) that cause musty, earthy smells.
Lack of Airflow
Storage containers, especially airtight ones, prevent proper air circulation. Without fresh air, any existing moisture cannot evaporate, and odors become concentrated within the confined space. This stagnant environment further encourages the growth of odor-causing microbes and allows smells to become deeply embedded in the fibers.
Accumulated Dust and Debris
Even seemingly clean blankets can accumulate microscopic dust, skin flakes, and other organic particles during use. If not thoroughly washed before storage, these residues can degrade over time, contributing to stale smells. Dust itself can also harbor bacteria and absorb odors from the storage environment.
Absorption of Environmental Odors
Fabrics are highly absorbent. Blankets can readily pick up smells from their surroundings in storage, such as damp basement smells, chemical fumes from nearby cleaning products, or the scent of cedar if cedar chests are used without proper airing. These external odors can permeate the fabric, making the blankets smell stale or chemically.
Common Odors from Stored Blankets
The types of smells often indicate the underlying cause:
- Musty/Earthy: A strong indicator of mildew or mold growth due to dampness.
- Stale/Stuffy: Often results from a lack of air circulation and trapped environmental odors.
- Chemical/Plastic-like: Can occur if blankets were stored in plastic bags or containers that leach odors, or near paint/solvents.
Preventing Blanket Odors: Best Storage Practices
To ensure your blankets emerge from storage smelling fresh, focus on preparation and proper storage conditions.
1. Thorough Preparation is Key
- Wash Completely: Always wash blankets according to their care instructions before storing them. This removes dirt, oils, and any existing odors or microscopic organic matter.
- Ensure Absolute Dryness: This is perhaps the most crucial step. Never store blankets that are even slightly damp. Allow them to air dry completely, ideally in direct sunlight for a few hours (if suitable for the fabric), or tumble dry on a low setting until thoroughly dry. Even professional laundries emphasize this critical step for long-term fabric preservation.
- Repair Any Damage: Address tears or loose threads before storage to prevent further damage.
2. Choose the Right Storage Environment
- Cool, Dry, Dark Place: Store blankets in an environment with consistent temperature and low humidity. Basements and attics are often too humid and prone to temperature fluctuations, which encourage mold. A linen closet, under a bed, or a spare room closet are usually better choices.
- Use Breathable Storage:
- Cotton or Canvas Bags: These allow air circulation, preventing moisture buildup. Look for acid-free options to protect fabrics long-term.
- Clean Pillowcases or Sheets: For short-term storage, wrapping blankets in a clean, breathable fabric can work well.
- Avoid Airtight Plastic for Long-Term (unless fully dry and sealed): While vacuum-sealed bags can save space, they can trap any residual moisture, leading to mildew. If you use them, be absolutely certain the blankets are bone dry. They are better suited for pest protection than odor prevention if there's any moisture.
- Add Odor Absorbers:
- Cedar Blocks/Chips: A natural insect repellent and odor absorber.
- Unscented Dryer Sheets: Can impart a fresh scent.
- Baking Soda Sachets: Small pouches of baking soda can absorb lingering odors. Replace every few months.
3. Periodic Aeration
Even with the best storage, it's beneficial to periodically remove blankets from storage, shake them out, and air them in a well-ventilated area for a few hours every 3-6 months. This refreshes the fibers and allows any trapped air to circulate.
Removing Odors from Stored Blankets
If your blankets already smell after storage, don't despair! Here are effective methods to refresh them:
- Wash with White Vinegar: Add half to one cup of white distilled vinegar to the wash cycle along with your regular detergent. Vinegar is a natural deodorizer and can kill mildew spores.
- Baking Soda Soak: For stubborn odors, pre-soak blankets in a tub of water with a cup of baking soda for a few hours before washing.
- Air Them Out: Hang blankets outdoors on a sunny, breezy day. Sunlight is a natural disinfectant and the fresh air can dissipate many odors. Ensure they are completely dry before bringing them back inside.
- Professional Cleaning: For delicate or heavily soiled blankets (e.g., wool, silk), consider professional dry cleaning, which can safely remove odors and refresh the fabric.
Quick Storage Tips Comparison
| Feature | Recommended Practice | Why it Works |
|---|---|---|
| Preparation | Wash and ensure complete dryness | Eliminates moisture, prevents mildew/bacteria |
| Storage Container | Breathable cotton/canvas bags, clean pillowcases | Allows air circulation, prevents moisture buildup |
| Storage Location | Cool, dry, dark closet or under-bed storage | Discourages mold growth, protects fabric |
| Odor Control | Cedar blocks, baking soda sachets | Absorbs odors, deters pests |
| Maintenance | Periodically air out blankets | Refreshes fabric, prevents stagnation |
By understanding the causes of odors and implementing these preventative measures, you can ensure your blankets stay fresh and inviting, ready for use whenever you need them.
