Dongguan Residents Complain About Nestlé Coffee Factory Odors

Near Nestlé’s coffee factory in Nancheng, Dongguan, residents say the air itself has become unbearable. What should be the comforting aroma of coffee has, for some, turned into a daily nuisance — thick, burnt-smelling fumes that force them to keep windows shut and even consider moving away.

The factory reportedly emits strong coffee-like odors mainly before 10 a.m. and after 7 p.m., with visible white or yellowish smoke. Nearby residents say the smell is strongest during these times, and some have lived with it for over a decade.

What Are Residents Experiencing?

People living near the Nestlé plant — now surrounded by apartments, offices and shops — report a persistent “coffee” smell that many find unpleasant. In particular, residents of the City Scenery and Jingcheng residential compounds say the odor has made their lives difficult. Some describe it as a burnt, acrid scent that lingers for hours. Furniture and floors are often coated with a fine, soot-like dust, and visitors frequently complain of headaches from the smell.

“I used to love coffee,” said resident Liu Junsheng of City Scenery. “But now, just hearing the word makes me feel sick.” Chen Min from Jingcheng, who is trying to sell her home, added that the odor has been a constant issue since 2009, causing discomfort and prompting many complaints.

When and How Are the Odors Released?

According to residents and local reports, the most intense odors come from the factory before 10 a.m. and after 7 p.m. During these periods, white or slightly yellowish smoke is visibly emitted from the site, and the burnt-coffee smell is strongest. The factory uses natural gas for roasting, and these time windows coincide with batch roasting activity.

The emissions include particulate matter and volatile organic compounds associated with the roasting process. Although not classified strictly as harmful pollutants under current national standards, the smells are potent enough to affect nearby residents’ daily lives.

What Does the Factory Say It Is Doing?

Nestlé has acknowledged the complaints and stated that it has invested nearly 10 million RMB since 2007 to reduce emissions. Measures include re-burning roast exhaust gases and installing afterburners to minimise odour release. The company said it continues to take “active measures” to address the issue but did not confirm whether it plans to relocate the factory.

“The factory faces challenges as urban development has surrounded the original rural site,” Nestlé told a local media outlet. They reiterated efforts to reduce environmental impact through technical solutions.

What Do Environmental Authorities Say?

Officials from Dongguan’s Environmental Protection Bureau explained that while residents call it a “bad smell,” the correct term is “coffee-related odor.” These odors come mainly from compounds like furans, phenols, and olefins released during roasting. These are not classified as hazardous under current air quality monitoring protocols, so the emissions are not officially monitored for odor.

The bureau does conduct quarterly checks on the factory’s wastewater and emissions, measuring for particulate matter, sulfur dioxide, nitrogen oxides, and smoke opacity — all of which have reportedly tested within permitted levels in recent years.

What Do Experts Recommend?

Environmental specialists argue that even if a smell isn’t toxic, it can still be considered a nuisance if it affects quality of life. Professor Chen Zunyu from Sun Yat-sen University noted that while the specific chemicals in coffee roast odors may not fall under the eight regulated malodorous substances, they can still be treated as such if they disturb residents. He recommended better sealing and collection of roasting fumes, along with regular oversight of industrial odor sources.

“Ultimately, companies need to manage odors proactively,” he said. “It protects public health, improves efficiency, and aligns production with community expectations.”

Frequently Asked Questions

What exactly are residents complaining about near the Nestlé coffee factory in Dongguan?

Residents near Nestlé’s Dongguan coffee factory complain about strong, persistent coffee-like odors, especially noticeable before 10 a.m. and after 7 p.m. They describe the smell as burnt, acrid, and unpleasant, often forcing them to keep windows closed. Some also report fine, soot-like dust settling on surfaces indoors.

When are the coffee odors around the Nestlé factory strongest?

The odors are strongest in the early morning before 10 a.m. and in the evening after 7 p.m. During these times, residents report seeing white or yellowish smoke and experiencing the most intense burnt-coffee smells, which can linger indoors.

Has Nestlé taken any action to reduce the odor?

Yes, Nestlé has invested nearly 10 million RMB since 2007 to reduce emissions. Measures include re-burning roasting exhaust and installing afterburners. The company states it continues to implement measures to lower the environmental impact, though it hasn’t confirmed plans to move the factory.

Why aren’t the coffee odors officially monitored as pollution?

Dongguan’s Environmental Protection Bureau states that while residents call it a bad smell, it is technically “coffee-related odor” caused by furans, phenols, and olefins. These are not classified among the eight regulated malodorous substances, and there are currently no national standards or monitoring methods specifically for coffee roast odors.

What pollutants are actually measured at the Nestlé factory?

The factory is routinely monitored for particulate matter, sulfur dioxide, nitrogen oxides, and smoke opacity — all of which have tested within permitted levels according to the latest reports. These are standard metrics for industrial emissions, but they do not specifically cover odor-related compounds from coffee roasting.

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