Does a clean shirt start to smell as soon as it warms up while you're wearing it?
This is particularly common with sportswear: the garment smells fresh after washing, but the smell of sweat or mustiness quickly returns.
The return of unpleasant odours doesn't necessarily mean that the garment hasn't been washed properly. The fabric, how damp laundry is stored, detergent dosage, the cleanliness of your washing machine, and how clothes are dried can all affect how long your laundry stays fresh.
Why Do Sports Clothes Smell After Washing?
Many sports clothes are made from polyester or other synthetic fibres. These materials are lightweight and quick-drying, but sweat, body oils, and odour-causing residues can build up in the fibres.
When dry, the garment may smell clean and fresh. But as the fabric warms up and becomes damp during wear, odours trapped in the fibres can become noticeable again. That's why breaking the odour cycle means paying attention to your entire laundry routine.
How to Remove Sweat and Musty Odours from Clothes
1. Let Damp Clothes Dry Before Putting Them in the Laundry Basket
Don't leave sweaty clothes in your gym bag or damp laundry in a pile. Hang textiles up to dry if you're not going to wash them straight away. This helps prevent unpleasant odours from becoming embedded in the fabric.
2. Follow the Garment's Care Instructions
Choose the washing temperature and programme according to the care label. Washing at too high a temperature can damage the performance properties of technical fabrics, while an overly gentle cycle may not remove all the dirt. Regular fabric softener is generally not recommended for technical sportswear.
3. Don't Overload the Washing Machine
Water and detergent can't circulate properly in an overloaded drum. Leave enough room for the laundry to move freely and dose the detergent according to the size of the load, how dirty the laundry is, and the hardness of the water. Using too much detergent can also leave residue in the fabric
4. Dry Your Laundry Immediately After Washing
Remove the laundry from the washing machine as soon as possible after the cycle has finished. Shake out the garments and allow them to dry in a well-ventilated space. Leaving wet laundry sitting in the washing machine can quickly lead to musty odours.
5. Keep Your Washing Machine Clean
If freshly washed laundry smells musty, check the detergent drawer, door seal, and lint filter. Clean your washing machine regularly according to the manufacturer's instructions and leave the door slightly open between washes to allow the machine to dry.
Treat Odours and Visible Stains with Different Products
Odours and visible stains require different treatments. A product designed for odour removal neutralises odours trapped in textiles, while a stain remover targets visible dirt and stains before washing.
Visible sweat stains and other organic stains can be pre-treated with SINI Oxy’Clear Stain Remover or Stain Gel. Dampen the stain, rub the product into it, and leave it to work for 30–60 minutes before machine washing. The product is suitable for both white and coloured textiles and works best at temperatures above 40°C. Always check the garment's care instructions.
For small grease, food, and make-up stains, use SINI Stain Stick. Rub the stick onto the dampened stain, then rinse the treated area or wash the garment as usual. The Stain Stick is suitable for all washable textiles, including wool and silk.
Does Laundry Vinegar Help to Remove Odours from Clothes?
Regular laundry vinegar softens and freshens laundry while reducing static in textiles. SINI OdourStop Laundry Vinegar combines these benefits with long-lasting odour control.
The product contains 80% laundry vinegar and 20% wood-based odour remover, which neutralises odours trapped in textiles. After washing, a long-lasting odour-preventing effect remains in the fabric, helping laundry stay fresh for longer. Regular use helps reduce odours that have built up in textiles, wash after wash.
Up to 96% Odour Removal Effectiveness
The long-lasting odour control of OdourStop Laundry Vinegar remains in the fabric after washing. This benefit is particularly noticeable in sportswear and other textiles that easily absorb odours. The odour removal effectiveness is based on a laboratory test conducted according to the ISO 17299-2 standard, in which the product was compared with regular laundry vinegar.
How to Use SINI OdourStop Laundry Vinegar
Add 30 ml, or three capfuls, of OdourStop Laundry Vinegar to the fabric softener compartment of your washing machine. Always follow the textile's care instructions. If your washing machine has an automatic dosing system, check with the appliance manufacturer to ensure that the product is suitable for use.
OdourStop Laundry Vinegar is available in two fragrances: Linen and Bergamot. In addition to sportswear, the product is suitable for other washable textiles whose care instructions allow the use of laundry vinegar.