
Incense has been used for thousands of years for hygienic and spiritual purposes. However, recent studies have shown that incense smoke contains particulate matter that can be inhaled and may have negative health outcomes. Burning incense releases dangerous air pollutants, such as particulate matter (PM2.5) and gases like formaldehyde, benzene, toluene, and xylene. These pollutants can lead to respiratory diseases and cancers, particularly of the upper respiratory tract and lungs. The particulate matter released by incense burning is nearly five times higher than that of cigarettes. As a result, incense smoke may cause air filters to become stained and discoloured more quickly than usual. This is due to the build-up of soot and burned resin, which can be removed with vinegar or dish soap.
| Characteristics | Values |
|---|---|
| Health Risks | Incense smoke may cause cancer, asthma, heart disease, and chronic inflammation in the body. |
| Air Filter Stains | Incense use may cause air filters to become stained and dirtier than normal. |
| Cleaning Incense Stains | To clean incense stains, use vinegar, soap and water, or a combination of baking soda and vinegar applied with a toothbrush. |
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What You'll Learn

Incense smoke and health risks
Incense smoke contains particulate matter (PM), gas products, and organic compounds. The particulate matter in incense smoke is inhalable and can cause respiratory system dysfunction. Particles less than 2.5 μm in diameter (PM2.5) are believed to pose the most significant health risks as they can reach the alveoli in the lungs. The gas products from burning incense include CO, CO2, NO2, and SO2, among others. Incense burning also produces volatile organic compounds, such as benzene, toluene, and xylenes, as well as aldehydes and polycyclic aromatic hydrocarbons (PAHs).
The smoke released from burning incense has a pleasant smell and is used for hygienic and spiritual purposes in many cultures. However, studies have suggested that incense smoke can cause health issues. For instance, incense smoke has been linked to an increased risk of respiratory diseases, such as asthma, and other cancers, including upper respiratory tract carcinomas and lung carcinomas. Furthermore, incense smoke has been associated with an increased risk of heart disease and may affect brain health in older adults.
It is important to note that while there are correlations between incense use and certain health conditions, causation has not been established. A study found no association between exposure to incense burning and respiratory symptoms in primary school children, their non-smoking mothers, or district-matched controls. Another study of 61,000 people in Singapore concluded that incense use is safe in normal amounts and that the risk of cancer is very small, if not negligible.
To minimise potential health risks, it is recommended to reduce or limit exposure to incense smoke. Opening windows during or after burning incense can help lower the concentration of indoor air pollutants. Additionally, exploring alternative methods to achieve the desired fragrance or spiritual effects may be beneficial if you are concerned about the potential health risks associated with incense burning.
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Air purifiers and incense
Burning incense can release dangerous types of air pollution, including tiny particulate matter (PM2.5) and gases such as benzene, toluene, and xylene. These pollutants can be harmful to your health, potentially causing cancers and heart disease. As a result, incense can cause air filters to become stained and discoloured.
To mitigate the effects of incense smoke, it is recommended to use a HEPA air purifier with a carbon filter, which can effectively remove PM2.5 and gaseous pollutants from the air. At-home air purifiers, such as the Smart Air Sqair HEPA purifier, can be an effective solution for improving air quality. Additionally, improving ventilation can help reduce pollutant concentrations by diluting the indoor air with fresh, clean air from outdoors.
For those who enjoy the scent of incense, there are incense sticks marketed as "air purifiers" that are handcrafted and made from natural ingredients, claiming to fill the environment with positive energy. These sticks are advertised as being chemical-free and eco-friendly, providing a long-lasting fragrance for various purposes, such as prayer, meditation, and relaxation. However, it is unclear whether these incense sticks effectively improve air quality or purely serve aromatic purposes.
Personal air purifiers, such as the Smokebuddy, are also available for individuals who wish to discreetly enjoy incense burning. These handheld devices allow users to breathe smoke into the filter, which then releases clean, odourless air, reducing the lingering scent of incense. While these devices can help manage the smell of incense, it is unclear whether they actively improve air quality by removing the harmful pollutants released during incense burning.
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Cleaning an incense burner
First, allow the incense burner to cool down completely before handling. It is important to never touch or attempt to empty the burner while it is still hot, as this can cause burns or injuries. Once the burner is cool, gently lift the lid or remove any covering.
Next, you will need to dispose of the incense ash. Use a small brush or a soft cloth to sweep the ashes into a dustpan or container. Be sure to collect all the ashes, ensuring that none are left behind. Dispose of the ashes in a safe and appropriate manner, such as in a designated ashtray or a fireproof container. Remember to clean the brush or cloth afterward to remove any remaining ash residue.
After removing the ashes, you can begin cleaning the burner with soap and warm water. Gather a soft cloth, a small brush, dish soap, and warm water. These items will help you effectively remove any residue or buildup from your incense burner. Be sure to choose a soft cloth that is gentle enough to not scratch the surface of the burner. You can also use a wet soapy pipe cleaner to reach into narrow spaces.
For stubborn stains, you can use vinegar, a natural and effective cleaning agent. Fill a bowl or basin with equal parts vinegar and water, then place the incense burner in the solution and let it soak for about 30 minutes. After soaking, use a soft brush or sponge to scrub away the stains. The acidity of the vinegar will help dissolve the stains and make them easier to remove. Rinse the burner thoroughly with water to remove any vinegar residue, then dry the burner completely before using it again.
If you are using a backflow incense burner, also known as an incense waterfall or incense fountain, it is important to clean it regularly to prevent the buildup of oil or resin on the plate that holds the incense. This buildup can prevent new incense cones from burning properly and block the smoke from drifting downwards. Clean your backflow incense burner once every 2-3 uses to ensure only a minimal amount of oil buildup, making it easier to clean.
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Removing incense stains from fabric
Incense smoke can cause yellowish stains on walls and ceilings, similar to tobacco smoke. It can also cause soot and burned resin build-up on fabrics. Bleach should not be used to remove these stains, as it can destroy the dye in the fabric and cause permanent discolouration.
To remove incense stains from fabric, you can try the following methods:
- For spot cleaning, combine water, dishwashing liquid, and Q-tips.
- Apply a mixture of baking soda and vinegar with a toothbrush.
- Before using any cleaning solution, test it on a small, inconspicuous area of the fabric to ensure it doesn't cause damage or discolouration.
- For larger stains, use concentrated dish soap on both sides of the fabric and scrub with a toothbrush.
- Soak the fabric for 24-48 hours in a solution of laundry detergent and oxicleaner.
- After soaking, wash and use an extra rinse cycle. Repeat the process until the stain is completely lifted.
- For fuzzy fabrics, like fur or carpet, use playdough to lift the soot. After that, launder as normal.
If the stain persists, consider using a stain remover specifically designed for fabrics. Look for products that are safe for the type of fabric you are cleaning and always follow the manufacturer's instructions.
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Types of incense and their effects
Incense is made from natural ingredients such as herbs, flowers, resins, oils, wood, and other materials. However, incense makers nowadays add more materials to enhance their fragrance, ability to burn, and ability to hold their shape. Incense smoke may pose health risks, but some alternatives are available.
Nag Champa
This is the most popular incense in the world and is made from rare gums, resins, powders, and pure Mysore sandalwood oil. It is considered sacred and provides grounding and concentration. It is ideal for meditation, relaxation, and stress and anxiety relief.
Opium
Opium is a blend of sandalwood, cedarwood, jasmine, rose, and cinnamon. It is used for sleep, lucid dreaming, physic skills, and contacting deities and guides in dreams.
Palo Santo
Palo Santo wood has been used for thousands of years by Shamans and Healers among the Inca population. This “Holy Wood" is burned in their ceremonies and healing rituals, providing energetic protection and removing bad energies.
Lemongrass
Lemongrass is used to improve memory, help with focus and concentration, and increase energy. It is also a natural insect repellent and is great for burning outdoors.
Moldavite
Moldavite is used for cleansing, healing, and calming. It raises the energy of a space, filling it with healing, uplifting, and soothing energy.
Mother Earth
This grounding scent brings a sense of peace and tranquility and is good for purifying sleep areas.
Musk
The smell of musk is known to be an aphrodisiac and can create a sensual atmosphere. It is used to heighten sensual passion and can also help with courage and vitality.
Myrrh
Myrrh is an ancient incense used for protection, healing, purification, and spirituality. It was also used by the ancient Egyptians, as well as in the Christmas story, where the wise men brought it as a gift to baby Jesus.
Japanese Cedar, Sandalwood, and Camphor
These scents are often used in therapy, meditation, and ceremony. They are known to pull the mind into a calm, meditative state, making it easier to bring greater depth to your practice.
Lavender
Lavender essential oil has been shown in studies to effectively treat various ailments like insomnia, anxiety, stress, alopecia, and post-surgical pain. Burning lavender incense can help create a tranquil and calming atmosphere.
Aloeswood
Aloeswood is a deeply meditative scent. It is said to be like doing a 30-minute meditation just by breathing it in. It is also good for enhancing focus.
Patchouli
Patchouli is an earthy and rich scent often used in perfumes. It is often linked with sensuality and can also chase away mosquitoes.
Cedar and Sage
These scents are burned by indigenous tribes of the Americas for spiritual and hygienic purposes.
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Frequently asked questions
Yes, incense can cause air filter stains. The particulate matter released by burning incense sticks is nearly five times higher than cigarettes. This can lead to the air filter becoming stained and dirty.
It is recommended to use a HEPA air purifier with a carbon filter to remove dangerous gases released by incense, such as benzene, toluene, and xylene. Additionally, improved ventilation can significantly reduce particulate matter and volatile organic compound (VOC) concentrations by diluting the polluted air with clean air.
To prevent air filters from getting stained by incense, it is advisable to reduce or limit incense use and exposure to the smoke. Opening windows during or after use can also help lower the risk of staining.











































