Scented candles, incense, and aroma diffusers are popular for masking odors like cooking smells—but experts recommend opening a window instead for better results.
Sofie Vandenbroeck, environmental medicine expert at the Flemish Agency for Care and Health, urges caution with these products. "Incense sticks pose the greatest risk," she explains. "Burning them releases benzene, a known carcinogen, often at levels exceeding those in cigarette smoke."
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"The effects from candles and diffusers are more subtle," Vandenbroeck notes. "Combustion increases airborne particulate matter, which can harm health if exposure is excessive. Scented varieties worsen this by releasing additional volatile organic compounds (VOCs). Paraffin-based candles add even more harmful emissions. Those with sensitive airways often react strongly."
Whether using natural or synthetic essential oils, the burning process—not the oils—is responsible for poorer indoor air quality.
Good ventilation is key, per Vandenbroeck. Indoor air quality deteriorates quickly in sealed spaces. She advises opening windows after cooking and showering, and airing out bedrooms to remove excess moisture from overnight breathing.
Source: Welinlichtingekringen.nl
