How To Remove Vomit Odor From Mattress: Simple Steps That Actually Help

If you’re searching for “How To Remove Vomit Odor From Mattress,” you’re likely dealing with a fresh accident or a lingering smell that just won’t go away. This guide walks you through what to do, which household ingredients can help, and how to prevent the odor from returning.

Why does vomit odor cling to a mattress?

Vomit soaks into the fabric, foam, and stuffing of a mattress. Even if the stain looks gone on the surface, odor-causing residues can remain deeper inside. That’s why:

  • The smell can return after the mattress dries
  • Simply spraying air freshener rarely solves the problem
  • You may need several rounds of cleaning and deodorizing

Removing the odor means lifting moisture, cleaning the area, and neutralizing smells instead of just covering them up.

How To Remove Vomit Odor From Mattress: Step-by-step

1. Act quickly (but don’t rub)

If the vomit is fresh:

  1. Remove bedding and wash it according to its care labels.
  2. Use paper towels or a dry cloth to blot up as much as possible.
    • Avoid rubbing, which can push the mess deeper into the mattress.

If the vomit has already dried, gently scrape off any residue first.

2. Clean the stain before tackling the smell

Odor removal works best after the area is clean.

A simple approach:

  1. Mix a mild detergent with cool or lukewarm water.
  2. Dip a clean cloth in the solution, wring it out, and blot the stained area.
  3. Follow with a cloth dampened with plain water to remove soapy residue.
  4. Blot with a dry towel to remove excess moisture.

Avoid fully soaking the mattress; too much water can cause long drying times and more odor.

3. Use baking soda to absorb odor

Baking soda is commonly used to absorb moisture and neutralize odors in mattresses.

  1. Once the cleaned area is damp, not soaked, sprinkle a generous layer of baking soda over it.
  2. Gently press it into the surface with your hand.
  3. Leave it on for at least several hours; overnight is often more effective.
  4. Vacuum thoroughly using a brush attachment to remove all the powder.

If the smell is strong, this process may need to be repeated.

4. Can vinegar help with vomit odor?

Many people use white vinegar because of its sharp but temporary scent and its ability to help neutralize some odors.

A simple method:

  1. Mix equal parts white vinegar and water in a spray bottle.
  2. Lightly mist the affected area (avoid soaking).
  3. Let it sit for 10–15 minutes.
  4. Blot with a clean, dry cloth.
  5. Then apply baking soda as described above to help absorb both the vinegar and the vomit odor.

The vinegar smell usually fades as the area dries, especially if the room is well-ventilated.

How long does it take for vomit smell to leave a mattress?

The time can vary based on:

  • How much got into the mattress
  • How quickly you cleaned it
  • Airflow and humidity in the room

After following the steps above, many people notice a significant improvement within a day or two, but stubborn odors may require multiple treatments over several days. Allowing the mattress to fully air out is key.

What if the vomit odor is still there after cleaning?

If the smell lingers:

  • Repeat the baking soda treatment and let it sit longer.
  • Try moving the mattress where it can get more ventilation, such as near an open window (but keep it protected from direct rain or heavy moisture).
  • Check if the odor is coming from the bedding, pillows, or mattress protector instead of the mattress itself.

In some cases, if vomit has soaked deeply into the mattress core, the odor can be difficult to remove completely.

How can I prevent vomit odors in my mattress in the future?

Small precautions can make cleanup easier next time:

  • Use a water-resistant mattress protector to keep liquids from soaking in.
  • Address accidents as soon as possible, before they dry.
  • Keep simple supplies on hand: clean cloths, mild detergent, baking soda, and a spray bottle.
  • Allow the mattress to dry completely before putting bedding back on, so moisture doesn’t get trapped.

✅ Quick Mattress Takeaways

Key points about How To Remove Vomit Odor From Mattress:

  • Act fast: Blot up as much as you can; don’t rub it in.
  • Clean first, deodorize second: Remove residue with mild detergent and water before focusing on odor.
  • Use baking soda generously: It helps absorb moisture and smells; leave it on for several hours, then vacuum.
  • Vinegar can help neutralize odors: A diluted spray followed by baking soda is a common home method.
  • Repeat if needed: Stubborn odors may require several rounds and plenty of drying time.
  • Protect going forward: A mattress protector and quick cleanup reduce the chance of lingering smells.

With a calm, step-by-step approach and common household materials, you can usually reduce or remove vomit odor from a mattress and restore a more comfortable sleeping environment.