How Do You Get Smell Out Of a Mattress? Practical Steps That Work

If you’re wondering “How Do You Get Smell Out Of a Mattress?”, you’re not alone. Mattresses can trap sweat, spills, and everyday odors over time. The good news: in most cases you can freshen a mattress at home with simple, gentle methods that protect the materials.

Below are clear answers to the most common questions about mattress odors and how to deal with them.

Why does my mattress smell in the first place?

Mattress odors usually come from one or more of these sources:

  • New mattress smell (off-gassing) – common with foam mattresses when first unboxed
  • Sweat and body oils – absorbed over months or years
  • Spills – drinks, food, or other liquids that soak into the layers
  • Environmental odors – smoke, pets, or musty rooms
  • Mildew – when a mattress is exposed to moisture and doesn’t fully dry

Understanding the cause helps you decide how to get smell out of a mattress safely and effectively.

How Do You Get Smell Out Of a Mattress: Step-by-step basics

1. Air it out thoroughly

Whenever possible, start with fresh air and ventilation.

  1. Strip all bedding and wash it.
  2. Open windows and doors for airflow.
  3. If you can, stand the mattress on its side and let it air several hours or a full day.

For new mattress smells, simply airing it in a well-ventilated room often reduces odor significantly.

2. Use baking soda to neutralize odors

Baking soda is a common, gentle deodorizer that can help with mild to moderate smells.

  1. Lightly vacuum the mattress first to remove dust and debris.
  2. Sprinkle a thin, even layer of baking soda over the surface.
  3. Gently rub it in with your hand or a soft brush.
  4. Leave it for several hours, or overnight if possible.
  5. Vacuum thoroughly to remove all residue.

You can repeat this process if odors remain. Baking soda is especially helpful for lingering sweat or musty smells.

3. Spot-clean specific odor sources

If the smell is from a particular spill or stain:

  • Blot up any fresh liquid with a clean, dry cloth
  • Mix a small amount of mild soap with water
  • Lightly dampen a cloth with the solution and blot (don’t soak) the area
  • Follow with a clean, damp cloth to remove soap residue
  • Allow the spot to air dry completely

Avoid saturating the mattress; too much moisture can create new odors or even mildew.

4. Sunlight, when possible

If conditions allow and the mattress type is suitable, a few hours of indirect sunlight can help with odors. Place the mattress where it gets good airflow and some sun exposure, but avoid prolonged, harsh direct sun that might damage some materials or covers.

Are there smells you shouldn’t ignore?

Some scents may signal issues beyond normal use:

  • Strong musty or “damp basement” odor – can suggest moisture or mildew
  • Persistent sour smell that returns quickly after cleaning
  • Noticeable odor coming from deep inside the mattress, not just the surface

If you suspect mold, mildew, or significant water damage, surface deodorizing may not be enough. In those cases, it may be safer to consider replacement, especially if the mattress has been wet for a long time.

How can I prevent mattress odors in the future?

Once you’ve learned how to get smell out of a mattress, prevention helps keep it fresher longer.

  • Use a washable mattress protector to shield against sweat and spills
  • Wash sheets and bedding regularly
  • Let the mattress air out when changing linens
  • Avoid placing the mattress directly on the floor where airflow is limited
  • Address spills immediately, before they soak in

These habits reduce the chance of deep-set odors forming in the first place.

Is it safe to use strong cleaners or fragrances?

It’s tempting to mask odors with strong sprays, but there are some cautions:

  • Avoid harsh chemicals that can damage foams or fabrics
  • Do not pour liquids directly onto the mattress surface
  • Go easy on heavily scented products; they may just cover the smell briefly rather than remove it

Gentle, minimal-moisture cleaning is usually the safest way to get smell out of a mattress without harming the materials.

How long does it take for mattress smells to fade?

Timing depends on the source:

  • New mattress odor: often improves significantly in a few days with good ventilation
  • Mild sweat or musty smells: may need a combination of airing and baking soda over a day or two
  • Deep or old odors: sometimes remain faintly even after cleaning, especially in older mattresses

If a strong smell persists after several cleaning attempts and thorough airing, the mattress may simply be reaching the end of its comfortable use life.

✔️ Quick Mattress Takeaways

Key points consumers should understand about “How Do You Get Smell Out Of a Mattress”

  • Start simple: Air the mattress in a well-ventilated room; this often reduces new or mild odors.
  • Use baking soda: It’s a common, gentle way to neutralize mattress odors without soaking the surface.
  • Clean, don’t soak: Spot-clean spills with minimal moisture and let the mattress dry fully.
  • Watch for moisture issues: Strong musty smells can indicate deeper moisture or mildew problems.
  • Protect going forward: A washable mattress protector and regular airing help prevent future odors.

With patience and gentle methods, most everyday smells can be reduced or removed, keeping your mattress fresher and more comfortable to use.