Danger lurks in scented candles

Scientists are sounding the alarm! Regular use of scented candles and other scented products is linked to an increased risk of cancer. Professor Alastair Lewis of the University of York warns that the ingredient that gives perfumed products a lemony scent reacts with air to create a potentially dangerous cocktail. Burning candles releases a toxic gas – formaldehyde, officially recognized as a human carcinogen since 2011. Scientists' observations Over the course of several weeks, Professor Lewis analyzed the levels of volatile compounds in various households. He observed that the concentration of limonene—used in scented candles, air fresheners, and cleaning products—was nearly 100 times higher than previously thought. When limonene (responsible for the lemon scent) is released into the air, it reacts with ozone and creates the carcinogenic substance formaldehyde. Harmful formaldehyde Fragrant chemicals have completely dominated the interiors of most homes. When these spaces are not ventilated, formaldehyde more easily reaches the lungs. Formaldehyde is flammable and has a strong odor. It is commonly used in various construction products, such as adhesives, paper coatings, and some insulation materials. Formaldehyde can cause burning in the eyes, nose, and throat, irritate the skin, and cause respiratory problems, wheezing, coughing, nausea, or nosebleeds. Solution to the problem The obvious solution to this problem is to open windows and doors and air out the home. However, this is impractical in winter. So what can we do? Numerous studies over decades have revealed that some plants absorb chemicals, including formaldehyde. So which plants are the best "absorbers" of these dangerous compounds? Lavender, ivy, geranium, and fern will reduce formaldehyde levels. Therefore, the best scent for our homes is not fresh lemon from a container, but natural lavender in a pot.