27/06/2025
Ang paliwanag kung ano ang amoy-kulob at bakit may amoy-kulob.
๐๐ฉ๐ฆ ๐ณ๐ข๐ช๐ฏ๐บ ๐ด๐ฆ๐ข๐ด๐ฐ๐ฏ ๐ช๐ด ๐ฉ๐ฆ๐ณ๐ฆ ๐ข๐ฏ๐ฅ ๐ธ๐ช๐ต๐ฉ ๐ช๐ต ๐ค๐ฐ๐ฎ๐ฆ๐ด ๐ต๐ฉ๐ฆ ๐ด๐ต๐ถ๐ฃ๐ฃ๐ฐ๐ณ๐ฏ, ๐ด๐ต๐ถ๐ง๐ง๐บ ๐ด๐ฎ๐ฆ๐ญ๐ญ ๐ฌ๐ฏ๐ฐ๐ธ๐ฏ ๐ข๐ด "๐๐ข๐ค๐ฎ-๐ ๐ช๐ก๐ค๐."
Have you ever pulled clothes off the drying rack, only to find they carry a musty scent despite being freshly washed? This common problem becomes even more noticeable during the rainy months in the Philippines, especially when clothes are dried indoors without sunlight. ๐๐ถ๐ต ๐ธ๐ฉ๐บ ๐ฅ๐ฐ ๐ค๐ญ๐ฆ๐ข๐ฏ ๐ค๐ญ๐ฐ๐ต๐ฉ๐ฆ๐ด ๐ด๐ต๐ช๐ญ๐ญ ๐ฆ๐ฏ๐ฅ ๐ถ๐ฑ ๐ด๐ฎ๐ฆ๐ญ๐ญ๐ช๐ฏ๐จ ๐ฃ๐ข๐ฅ?
The answer lies in the chemistry of tiny, invisible organisms and the compounds they produce. Even after washing, clothes can still contain small traces of organic matter like ๐๐ธ๐ถ๐ป ๐ฐ๐ฒ๐น๐น๐, ๐๐๐ฒ๐ฎ๐, ๐ผ๐ฟ ๐๐๐ฟ๐ณ๐ฎ๐ฐ๐๐ฎ๐ป๐ ๐ฟ๐ฒ๐๐ถ๐ฑ๐๐ฒ๐. They may also carry ๐ณ๐๐ป๐ด๐ฎ๐น ๐ฎ๐ป๐ฑ ๐ฏ๐ฎ๐ฐ๐๐ฒ๐ฟ๐ถ๐ฎ๐น ๐๐ฝ๐ผ๐ฟ๐ฒ๐ that arenโt completely removed in the wash. During the rainy season, when humidity is high and thereโs less sunlight and airflow, these damp fabrics become the perfect breeding ground for microbes.
Some of the most common culprits include species of ๐๐ด๐ฑ๐ฆ๐ณ๐จ๐ช๐ญ๐ญ๐ถ๐ด, ๐๐ญ๐ข๐ฅ๐ฐ๐ด๐ฑ๐ฐ๐ณ๐ช๐ถ๐ฎ, ๐ข๐ฏ๐ฅ ๐๐ฆ๐ฏ๐ช๐ค๐ช๐ญ๐ญ๐ช๐ถ๐ฎ. These microorganisms thrive in moist environments and, as they grow, they release what are called ๐๐ผ๐น๐ฎ๐๐ถ๐น๐ฒ ๐ผ๐ฟ๐ด๐ฎ๐ป๐ถ๐ฐ ๐ฐ๐ผ๐บ๐ฝ๐ผ๐๐ป๐ฑ๐ ๐ผ๐ฟ ๐ฉ๐ข๐๐. These VOCs are responsible for the distinct smell of kulob.
Three key VOCs contribute to this unpleasant odor. ๐๐ถ๐บ๐ฒ๐๐ต๐๐น ๐๐ฟ๐ถ๐๐๐น๐ณ๐ถ๐ฑ๐ฒ has a sulfur-like scent, often compared to rotting cabbage. ๐ญ-๐ผ๐ฐ๐๐ฒ๐ป-๐ฏ-๐ผ๐น gives off a moldy or mushroom-like smell, while ๐ด๐ฒ๐ผ๐๐บ๐ถ๐ป is the compound responsible for that earthy, damp scent often noticed after rainfall. These VOCs easily evaporate into the air and cling to the fibers of damp clothes. Without proper drying, the odors remain trapped in the fabric, making the smell much more noticeable during the rainy season.
Luckily, there are simple home remedies that can help get rid of the smell. ๐ฉ๐ถ๐ป๐ฒ๐ด๐ฎ๐ฟ, which contains acetic acid, can be added to the rinse cycle to neutralize odors and kill bacteria. ๐๐ฎ๐ธ๐ถ๐ป๐ด ๐๐ผ๐ฑ๐ฎ (sodium bicarbonate) works as a gentle base that absorbs acidic VOCs and freshens the fabric. ๐๐ฟ๐ผ๐ป๐ถ๐ป๐ด is also helpful, as the heat kills lingering microbes and evaporates any moisture that remains in the clothes.
So the next time your laundry smells a little off, youโll know itโs not just the weatherโitโs chemistry at work.
REFERENCES:
Bernut, A., Takiff, H., Cortesia, C., Gรณmez, K., Vilchรจze, C., De Waard, J., Kremer, L., Contreras, W., & Jacobs, W. (2014). Acetic Acid, the Active Component of Vinegar, Is an Effective Tuberculocidal Disinfectant. mBio, 5. https://doi.org/10.1128/mBio.00013-14
Dauphin, B., Blancard, D., Darriet, P., La Guerche, S., & Pons, M. (2006). Characterization of some mushroom and earthy off-odors microbially induced by the development of rot on grapes. Journal of Agricultural and Food Chemistry, 54(24), 9193โ9200. https://doi.org/10.1021/JF0615294
Gomes, K., Martins, I., De Brum Vieira, P., Macedo, G., Posser, T., Franco, J., & Rodrigues, N. (2020). Fungal compound 1-octen-3-ol induces mitochondrial morphological alterations and respiration dysfunctions in Drosophila melanogaster. Ecotoxicology and Environmental Safety, 206, 111232. https://doi.org/10.1016/j.ecoenv.2020.111232
Ijaz, M., Eppinger, J., Srinivasan, V., Whitehead, K., McKinney, J., & Nims, R. (2022). Potential for Microbial Cross Contamination of Laundry from Public Washing Machines. Microbiology Research. https://doi.org/10.3390/microbiolres13040072
McCormick, T., Kessler, M., & Nedorost, S. (2007). Allergens Retained in Clothing. Dermatitis, 18, 212โ214. https://doi.org/10.2310/6620.2007.06052
Nasr, R., Zareshahrabadi, Z., Zomorodian, K., Mohammadi, R., Amirzadeh, N., & Pakshir, K. (2023). Evaluation of building washing machines as an extreme environment for potentially pathogenic fungi. Scientific Reports, 13. https://doi.org/10.1038/s41598-023-48598-0