The Stain Library

How to remove baby sick from a cushion cover

  • DifficultyEasy
  • OutlookUsually removable
  • MaterialCushion cover
  • Reviewed7 September 2026

The short answer

Take the cover off and remove the pad before doing anything else. That turns a difficult upholstery job into an ordinary laundry one. Check the pad, because sick that soaked through is now in the filling and cleaning the cover alone leaves a smell. Wash the cover cool with biological detergent and dry it fully before putting it back on.

If it has just happened

Unzip the cover and get the pad out. Everything is easier once the two are separated, and it tells you immediately whether the filling has been reached.

Heat can set this stain permanently

Do not use hot water, a tumble dryer, an iron or a steam cleaner until the mark has gone. Heat fixes this type of stain into the fibres and makes it far harder to shift.

Test on a hidden area first

Try any cleaner on a hidden part of the material first, such as a seam, an offcut, inside a hem or under a piece of furniture. Wait for it to dry and check for colour change before treating the visible mark.

Cleaning the mark is not the same as disinfecting

If the sickness came with a stomach bug rather than an ordinary posset, the surface may carry norovirus, which spreads easily and survives on hard surfaces. UK public health guidance is to wear gloves, avoid shaking contaminated laundry, wash affected laundry separately with normal powder at 60 C where the care label allows it, and disinfect compatible hard surfaces with a bleach based product afterwards. Do that after the stain work, not instead of it, and only where the material tolerates it.

Keep every kind of drying heat away until the mark has gone

Baby sick is mostly milk protein. Heat coagulates protein and locks it into the material, which is why a mark that would have washed out can become permanent after one hot wash, one pass with an iron, a hairdryer or a spell on a radiator. Cool or warm treatment, air drying, and a proper look in daylight before anything warm goes near it.

What you will need

  • Disposable gloves Sickness that came with a stomach bug is a hygiene job as well as a stain.
  • A spoon or blunt scraper For lifting solids off before any water is involved.
  • Cold running water Cold first. Warm water starts to set milk protein into cotton.
  • Biological laundry detergent What this is Protease enzymes break the milk protein apart. This is the main tool on cotton.
  • A bowl or sink for soaking Long cool soaks do the work that a hot wash is not allowed to do.

Helpful but not essential

  • An oxygen based stain remover For whites and colourfast items, against the yellowing that milk fat leaves.

Fresh baby sick on cushion cover

Cold water, then enzymes, then time. Heat comes last or not at all.

  1. Lift the solids off before adding water

    A spoon, worked from the outside of the mark inwards. Wetting solids spreads them, so this step is worth the twenty seconds it takes.

  2. Rinse from the back under a cold tap

    Hold the fabric with the mark face down and run cold water through the back of it, so the milk leaves the way it came in rather than being pushed through the weave. Cold, because warm water begins to set the protein.

  3. Work biological detergent into the damp mark

    A little neat biological detergent rubbed in with your fingers, then left for fifteen minutes. The enzymes cut the milk protein into fragments small enough to rinse out.

  4. Then wash, and check before drying

    Wash the cover cool with biological detergent, with the zip done up, and dry it fully before it goes back on the pad.

  • How longFifteen minutes, plus the wash
  • RepeatingRinse until the water runs clear before washing.
  • Stop ifthe water runs clear and nothing more lifts onto a white cloth

Dried baby sick on cushion cover

Soaking replaces the heat that this stain does not allow.

  1. Break the dried milk off dry

    Flex the fabric between your fingers to crack the crust and brush the pieces away. Every flake removed dry is one that does not have to be dissolved.

  2. Soak in cool water with biological detergent

    The cleaning trade body's guidance for spit-up is a soak of at least thirty minutes for a fresh mark and several hours for an older one. Lukewarm water at around 30 C dissolves milk fat better than cold and is still well below setting temperature.

  3. Work the mark between your fingers now and then

    Rubbing the fabric gently against itself lifts softened residue out of the weave without the damage a brush would do.

  4. Rinse, wash and look at it dry

    Rinse well and wash cool. Keep the temperature down, because a cover is cut to fit its pad and shrinkage makes it impossible to refit.

  • How longThirty minutes to several hours
  • RepeatingRepeat the soak rather than raising the temperature.
  • Stop ifthe mark has gone before the item goes near a dryer or an iron

Old or set in baby sick on cushion cover

Once the protein has gone, what is left is milk fat, and that needs a different tool.

  1. Overnight soak in biological detergent

    Cool water and a scoop of biological powder, left overnight. Contact time is the lever that replaces temperature, and it is more effective than people expect.

  2. Then an oxygen soak for the yellowing

    An old milk mark usually ends as a yellow patch, which is oxidised fat rather than protein, and enzymes do nothing to it. An oxygen based stain remover in cool water is the correct escalation. Check the care label and test a hidden seam on anything coloured.

  3. Wash cool and dry in the air

    Wash cool, dry fully and check the pad has been dealt with separately before reassembling.

  4. Then stop before you use heat

    If it has not gone, a hot wash or a dryer will fix it permanently. A faint shadow on a used item is a better outcome than a set stain on a shrunken one.

  • How longAn overnight soak
  • RepeatingTwo long soaks, then accept the result.
  • Stop ifthe mark has gone, or two long treatments have left it unchanged

What not to use on cushion cover

  • Washing it hot, tumble drying or ironing before the mark has gone

    Baby sick is mostly milk protein and heat coagulates protein into the fibre. A 60 degree wash on a mark that has not lifted is the single most common way a removable stain becomes a permanent one, and the cleaning trade body's own advice is to keep the item out of the dryer until it is clean.

  • Rubbing at the mark with a nail brush

    Cotton takes firm handling, but a stiff brush breaks fibre ends and raises a fuzzy patch that catches the light and reads as a mark long after the stain has gone.

  • Reaching for chlorine bleach on a coloured item

    It strips dye in a patch and there is no way back. On white cotton it is an option, but an oxygen product does the same job on milk yellowing without the risk, and bleach must never meet vinegar or an ammonia cleaner.

  • Cleaning the cover and leaving the pad

    If the sick soaked through, the smell is in the filling. A clean cover over a soiled pad smells again within days.

  • Washing the cover hot to be sure

    Heat sets the stain and shrinks the cover, and a shrunken cover will not go back on its pad.

White compared with coloured cushion cover

Cushion covers are often the strongest colour in a room and are frequently not colourfast, particularly the deep dyes used on velvet and linen covers. Test a seam allowance with a damp white cloth before washing a dark cover, and keep it away from pale items while it dries. Shrinkage is the other risk, because a cover is cut to fit its pad exactly and a hot wash will make it too small to get back on.

Products that genuinely help here

Try the household route above first. These are worth buying only when it is not enough.

  • Optional product

    Vanish Oxi Action Stain Remover Powder for Colours, 2.4 kg

    For a washable cover once it is off the pad

    Once the protein has gone, what is left on a milk mark is oxidised fat, which shows as a yellow shadow and which enzymes do nothing to. An oxygen based soak is the correct escalation for that, and being chlorine bleach free it can be used on coloured items where household bleach would strip the dye.

    Worth knowing. Test a seam allowance first. Cushion covers are often the strongest colour in a room and not always colourfast.

    Check current price Checked 6 October 2026

    View at Amazon UK Paid link

If the mark is still there

Check the pad again once the cover is clean. A pad that smells will make the clean cover smell within a day.

Foam and polyester fibre pads can be spot treated and dried thoroughly with air, but they take a long time. Feather pads are washable in a large machine if the ticking is sound, and need a long slow dry with regular shaking to stop the feathers clumping. In practice, a new pad costs a few pounds and is usually the better answer.

When you put the cover back on, make sure both are completely dry. A dry cover over a damp pad is the most common reason a cushion smells a week after it was cleaned.

When to stop and call someone

Use a specialist rather than continuing if the cover is a fixed upholstery piece that does not come off, if the fabric is dry clean only, or if the pad underneath still smells after being treated. Replacing an inner pad is cheap and is usually the right answer.

Why baby sick behaves this way on cushion cover

A cushion is a washable cover over an unwashable pad, and the two need separating.

Removing the cover changes the problem

On the pad it is upholstery, where nothing can be rinsed. Off the pad it is a flat piece of fabric with a care label. That one step is the most valuable thing on this page.

The pad is where the smell lives

Feather, polyester fibre and foam all absorb and dry slowly. Cleaning the cover while leaving the pad soiled produces a cushion that looks fine and smells.

Shrinkage matters more than usual

A cover is cut to its pad with very little tolerance. A hot wash makes it a struggle to refit, and on some covers impossible.

Trims complicate the wash

Piping, tassels and metal zips distort or rust in a machine. Do the zip up and use a mesh bag.

Sources

What we checked and when. Where a manufacturer instruction disagrees with anything here, follow the manufacturer.

  1. How to remove stains from baby clothes, Persil UK manufacturer

    UK manufacturer guidance to act quickly on formula, blot when immediate washing is impossible, rinse under cool water, soak for at least 15 minutes where the care label permits, pre-treat with detergent and then wash to the care label.

    Checked 7 September 2026

  2. A guide to newborn laundry, American Cleaning Institute trade body

    Cleaning trade body guide to pre-treat breast milk, formula or spit-up with an enzyme stain remover, soak fresh marks for at least 30 minutes and older marks for several hours, launder, and keep stained items out of the dryer until the mark has gone.

    Checked 7 September 2026

  3. How to remove baby formula stains, Purex Stain Lab manufacturer

    Manufacturer guidance identifying breast milk, formula and baby spit-up as protein stains, explaining the role of enzymes, and warning that the mark should be checked before any drying heat because heat sets what remains.

    Checked 7 September 2026

  4. How to care for linen, FatFace retailer

    UK retailer care guidance that linen is washed in cold or lukewarm water at 30 C or lower to avoid shrinking, on a delicate or hand wash setting to reduce agitation, with a gentle detergent free of bleach and brighteners, that fabric softener coats the fibres and reduces breathability, and that bleach weakens linen fibres.

    Checked 7 September 2026

  5. Norovirus: what to do and how to stop the spread, UK Health Security Agency authority

    UK public health guidance establishing that illness related vomit can carry norovirus, that contaminated laundry should be washed with normal powder at 60 C where the care label permits, and that compatible hard surfaces should be disinfected with a bleach based product.

    Checked 7 September 2026