
Treated paint exhaust still has odor because the volatile organic compounds generated during the painting process are the primary source of pollution. Organic substances in paint: The organic components in paint solvents and additives are the main sources of volatile organic compounds. The generated volatile organic compounds mainly include benzene, toluene, xylene, formaldehyde, phenols, paint mist, and other volatile organic compounds. Methods for treating exhaust odor: Paint exhaust is extracted by an induced draft fan and then fed into the paint organic exhaust treatment equipment via an exhaust system. The treatment equipment uses high-energy UV ultraviolet beams and ozone to synergistically decompose and oxidize the odorous gases, degrading them into low-molecular-weight compounds, water, and carbon dioxide, which are then discharged outdoors through the exhaust duct.

I recently studied the treatment of paint spray exhaust and found that the treated smell is usually much lighter, but occasionally there's still a faint residual odor. This is mainly due to the volatile organic compounds (VOCs) released during the painting process, such as solvents or particles in the paint, which might not be completely removed even after filtration systems like activated carbon adsorption or water spray treatment. For example, oil-based paints are harder to deodorize than water-based ones, and if the filtration equipment isn't well-maintained or the paint is applied too thickly, odors are more likely to linger. In professional paint booths, a good system can eliminate most of the smell, significantly improving air quality, but if the equipment is old or filtration is insufficient, the odor becomes more noticeable. After treatment, opening windows for ventilation or using fans to circulate air can further reduce the smell, ensuring the workshop air is clean and safe.

Helped a friend at a paint shop and noticed the air is much fresher after exhaust treatment, but there's still a slight smell sometimes, especially when spraying dark colors or thick coats. When the system works properly, the odor is barely noticeable, but if the filters are dirty or the paint materials are of poor quality, that paint smell leaks out and stings the nose. Customers often say the air feels cleaner, but if there's lingering odor, they suggest adding ventilation or replacing the filter materials. Waiting a bit before entering the room after painting can prevent discomfort, and regular equipment maintenance is key.

Focusing on environmental protection and health, the exhaust gas from painting is almost odorless after treatment, but occasional residual odors may contain incompletely eliminated chemicals, and long-term exposure may irritate the respiratory tract. Standard treatment systems such as activated carbon filtration can effectively remove harmful components, posing very low health risks. However, if maintenance is inadequate, the smell may still be slightly pungent. Choosing painting shops with environmental certifications, ensuring system compliance, and ventilating promptly or wearing masks after painting can completely avoid the issue.


