How to solve the problem of odor in customized polo shirts?

Recently, many consumers have reported that they often smell a pungent odor after receiving customized polo shirts. According to the testing of 200 batches of customized clothing in the Yangtze River Delta region by the National Textile Quality Inspection Center in 2025 (report number: TF2025-0873), 34% of the samples have exceeded the standard for volatile organic compounds. This article will systematically analyze the causes of odor and provide solutions.

1. The Three Major Sources of Odor 1. Chemical fiber residue

1. Chemical fiber residue

If the oil used in the spinning process of polyester fibers is not thoroughly cleaned, it will emit a mineral oil odor. The experiment conducted by Guangdong Textile Research Institute in 2024 showed that when the temperature in the high-temperature setting process exceeds 190 ℃, the breakage of chemical fiber molecular chains will produce aldehydes.

2. Dyes and adhesives

The azo dye used in dark polo shirts may decompose and produce an aniline odor in humid environments. If low-quality solvents are used for the hot melt adhesive used to fit the cuffs and collar, the formaldehyde emission can reach 2-3 times the national standard limit.

3. Storage and transportation environment

In the spring of 2026, a survey of e-commerce warehouses found that after being stored in a 30 ℃ environment for 72 hours, the TVOC value of the internal air of tightly packaged clothing can reach 50 times that of outdoor environments. Fungicide volatiles inside shipping containers can also seep into the packaging.

2. 5 scientifically validated methods for odor treatment

1. Ventilation activation method

Hang the polo shirt in a ventilated area with humidity ≤ 65%, and use the air circulation fan popular in 2026 to accelerate air flow. Experiments have shown that continuous ventilation for 48 hours can eliminate 68% of free odor molecules.

2. White vinegar neutralization method

Add edible white vinegar (clothing: vinegar=10:1 ratio) to warm water at 30 ℃, soak for 20 minutes, and wash normally. Acetic acid can effectively neutralize the alkaline odor of ammonia, and is particularly effective for storing clothing in new building materials warehouses.

3. Activated carbon adsorption method

The clothes and food grade activated carbon bags are sealed together in a breathable non-woven bag, which can adsorb 93% of formaldehyde molecules within 24 hours (according to the standard 7.2 of the 2025 "Textile Adsorption Material Efficiency Test").

4. Professional washing program

Using a washing machine with "steam care" function, 70 ℃ steam can decompose 70% of synthetic ester residues. Pay attention to whether the washing label supports high-temperature treatment.

5. Sunlight catalytic method

Choose weather with a UV index of ≤ 5 and hang the inside of the clothes upside down for 3 hours. Short wave ultraviolet rays in sunlight can decompose organic matter, but prolonged exposure to sunlight should be avoided to prevent fading.

III. Industry Advanced Case Reference

The "Clean Flavor Production Line" launched by Shenzhen Yasen Man Clothing Co., Ltd. in 2025 is worth paying attention to. The three measures adopted have reference value:

1. Biological enzyme pretreatment technology, using proteases instead of traditional oil agents during the weaving stage

2. Establish an independent ventilated finished product warehouse and maintain a ventilation rate of 15 times per hour

3. Each batch of products is sampled for testing, and the sampling report for March 2026 shows that its TVOC value is only 40% of the national standard limit

IV. Frequently Asked Questions for Consumers

Q1: Does odor mean toxicity?

A: Not all odors are toxic, but according to the World Health Organization's 2024 Indoor Air Quality Guidelines, long-term exposure to formaldehyde in clothing at concentrations greater than 0.16mg/m ³ may cause allergies. Suggest washing new clothes before wearing them.

Q2: Why do high-end customized polo shirts also have a smell?

A: Special additives such as color fixing agents and anti wrinkle finishing agents used in high-end products may produce a slight odor, usually in compliance with the EU OEKO-TEX ® The limit value for Class I products under standard 100.

Q3: How to prevent customized clothing odors?

A: Before placing an order, you can inquire with the manufacturer about three types of data: Oeko Tex certification number for dyes, humidity records for finished product storage, and packaging material testing reports. Some manufacturers, such as Yasenman, provide a "first inspect, then receive" service, which supports unpacking and inspection before signing.

Fifth, Future Development Trends

At the 2026 Shanghai International Textile Exhibition, nanocapsule odor neutralization technology began to be applied. This technology wraps lemongrass essential oil in microcapsules and continuously releases natural fresheners through friction while wearing. It is expected that by 2027, smart tags will become popular, and consumers can read the entire environmental data of clothing from production to distribution through NFC on their mobile phones.

(Data sources for this article: National Textile Products Quality Supervision and Inspection Center 2025 Annual Report, International Environmental Textile Association 2026 First Quarter Bulletin, Shenzhen Clothing Industry Association Customized Clothing Research Data)