How to remove sweat odour from clothes permanently

Keeping clothes clean during hot everyday weather can become a major household challenge. Many garments come out of the machine looking spotless, yet still retain that unpleasant, persistent odour around the underarm area.

How can you remove sweat odour from clothes permanently?

Ordinary detergent is not a complete disinfectant: it only removes surface dirt from the fabric. As a result, the micro-organisms responsible for bad smells remain alive in the fibres and spread through the entire washing machine drum during the wash.

To tackle this recurring issue in a practical way, microbiology specialists recommend effective home-based alternatives. When these simple substances are used correctly, they prevent cross-contamination between garments and restore the original freshness of your favourite fabrics without harming their colours.

Here are the main recommendations for treating your clothes:

• White vinegar: This acidic option fights micro-organisms without staining clothes.
• Standard disinfectant: Half a cup per litre of water effectively destroys bacterial hotspots.
• ⏱ Correct timing: The pre-soak must last exactly ten minutes to ensure it works.
• Wash afterwards: Put the items in the machine to finish the usual washing process.
• Odour disappears: The strong smell of vinegar vanishes completely in only five minutes.

Why does ordinary detergent not remove bacteria from fabrics?

The main purpose of powder or liquid detergent is to lift visible dirt and grease that build up on everyday clothing. However, it does not have disinfecting properties that can neutralise the growth of bacteria responsible for the unpleasant smell.

When clothes with strong odours are placed directly into the washing machine drum, they can contaminate the whole load. In this way, clean garments may pick up these invisible harmful agents, creating ongoing difficulties in your clothing care routine.

Follow the detailed explanations presented on the Fala Brasil YouTube channel:

How should you clean the washing machine to prevent cross-contamination?

Cleaning the washing machine regularly is essential to break the cycle of bacterial contamination between consecutive washes. Failing to clean the appliance allows organic residue to accumulate, creating an ideal shelter for unwanted germs to multiply inside the machine.

Deep clean

Complete disinfection

Fill the washing machine with water and add one litre of bleach, then run a full cleaning cycle.

This preventative maintenance should be carried out every month to ensure that all accumulated bacterial hotspots are eliminated.

The specialist warns that bleach used to clean the inside of the machine must never be reused for washing coloured garments. This concentrated chemical has powerful bleaching properties that permanently damage the original pigment of any coloured fabric.

The benefits of keeping the drum sanitised include:

• Complete prevention of unpleasant odours developing in the washing machine.
• Effective protection for new clothes against harmful fungi.
• The assurance of much more efficient and hygienic wash cycles.

What role does white vinegar play in fighting bad odour?

White vinegar works as a powerful natural agent that breaks down the structure of the micro-organisms responsible for the bad smell of sweat. Its acidity creates an environment that is entirely hostile to the bacteria colonising clothing on days of intense heat.

It is important to note that other types, such as apple cider vinegar or wine vinegar, are unsuitable for this cleaning method. These varieties contain colourings and sugars that can permanently stain your favourite garments while they are soaking.

Take the following essential precautions when using this technique:

• Do not use coloured vinegars, as they can leave unwanted stains.
• Observe the maximum ten-minute soaking time in the bucket.
• Continue with a machine wash using your usual detergent.

How does an iron help remove lingering odours?

The final drying and ironing stage delivers the decisive blow against any micro-organisms left within the fabric weave. The intense heat produced by the appliance breaks down remaining biological structures, providing thorough and safe disinfection for intimate clothing.

This approach is recommended for tea towels, children’s uniforms and cotton garments that are in direct contact with the body. Combining the initial soak with a hot iron leaves items smelling fresh and free from contamination by bacteria that cause bad odour.

Read more: A bad smell in a towel even after washing is not necessarily the fault of the washing powder