Why Does My Pillow Smell? Causes and Effective Solutions

From Puffy Editorial Team

Last updated on: Feb 21, 2025 | 5 min read

Why Does My Pillow Smell? Causes and Effective Solutions

Key Takeaways

Sweat, oils, and bacteria buildup are common causes of pillow odor.
New pillows may have a factory or chemical smell that needs airing out.
Proper washing and deodorizing methods can eliminate unpleasant odors.
Using pillow protectors and frequent washing helps prevent smells.

A fresh-smelling pillow is essential for a good night’s sleep, but over time, pillows can develop unwanted odors.

Whether it’s a musty scent, a chemical smell from a new pillow, or lingering body oils, understanding the causes and solutions can help keep your pillows clean and fresh.

Let’s dive into why your pillow might smell and how to eliminate odors effectively.

Why Does My Pillow Smell Weird?

If your pillow smells unusual, several factors could be to blame. Understanding these causes can help you identify the best solution:

Sweat and body oils: Over time, sweat and natural oils seep into your pillow, creating a musty or sour smell that intensifies with continued use.
Bacteria and dust mites: Microscopic organisms thrive in warm, damp environments, leading to odors that become harder to remove over time.
Moisture and mold: If your pillow remains damp for extended periods, mildew and mold can develop, producing an unpleasant, stale scent.
Pet dander and drool: If your furry friend sleeps on your pillow, their saliva and fur can contribute to lingering smells that require deep cleaning.
Diet and lifestyle: Spicy foods, alcohol, and certain medications can lead to stronger body odors, which easily transfer to pillows and accumulate over time.

To prevent persistent smells, regular washing, proper ventilation, and the use of protective covers are crucial for maintaining freshness.

How to Get Rid of New Pillow Smell

New pillows often come with a factory or chemical smell from manufacturing and packaging. Here’s how to eliminate it:

Step 1: Air It Out

Remove the pillow from its packaging and place it in a well-ventilated area for 24-48 hours to help dissipate any lingering factory odors.
Sun exposure can help break down chemical smells and naturally freshen the pillow.

Step 2: Use Baking Soda

Sprinkle a generous amount of baking soda over the pillow and let it sit for an hour to absorb unwanted odors.
Vacuum off the baking soda thoroughly to ensure no residue is left behind.

Step 3: Wash If Possible

Check the care label to determine if the pillow is machine washable and follow the recommended washing instructions.
Use a mild detergent and run a gentle cycle with warm water to remove any manufacturing residues.
Dry completely using low heat or air-drying to prevent moisture buildup and avoid mold or mildew formation.

Pairing a freshly washed pillow with a Puffy Lux Mattress ensures a clean, odor-free sleep environment. The breathable materials prevent heat and moisture retention, reducing odors over time.

How to Get Smell Out of Pillow Cases

Even if your pillow is clean, its case can trap sweat, oils, and lingering odors. Follow these steps to keep pillowcases fresh and odor-free:

Step 1: Pre-Treat Stains and Odors

Mix one part white vinegar with two parts water and soak the pillowcase for 30 minutes before washing to break down any embedded smells.
Apply baking soda paste to any particularly smelly or stained areas for extra deodorizing power.
For deep-set odors, try adding a few drops of essential oils like lavender or tea tree to the soaking water for added freshness.

Step 2: Wash with Hot Water

Use hot water and a mild detergent to effectively remove bacteria, oils, and any residual odors.
Add a cup of white vinegar to the rinse cycle for additional odor-neutralizing benefits.
If the odor persists, run an extra rinse cycle to ensure all residues are completely washed out.

Step 3: Dry Properly

Air-dry outside in direct sunlight to naturally kill bacteria and enhance freshness.
If using a dryer, select a low-heat setting to prevent fabric shrinkage or damage while ensuring the pillowcase dries completely.
Tossing in dryer balls or a clean towel can help maintain softness and absorb lingering moisture.

Preventing Future Pillow Odors

Keeping your pillow fresh is easier with a few preventive measures:

Use a pillow protector: A breathable, waterproof cover prevents sweat, oils, and spills from seeping in, extending the pillow’s lifespan.
Wash pillowcases weekly: Regular washing prevents buildup and maintains a fresh scent for longer-lasting cleanliness.
Fluff pillows daily: This allows airflow and prevents moisture accumulation that can lead to bacterial growth.
Replace old pillows: If odors persist despite regular cleaning, it may be time for a new pillow to ensure a hygienic sleep environment.
Store properly: Keep extra pillows in a cool, dry place with proper ventilation to avoid musty smells from developing.

For those looking to enhance their sleep hygiene, a Puffy Cloud Mattress offers moisture-resistant materials and superior airflow, helping to keep your bedding fresh and odor-free.