Leo Martínez
The smell of paint is often described as “foul” or “rancid”, like “sour milk”, “arm pits”, or “gasoline”. The odour comes from the volatile organic compounds (VOCs) in the paint decaying, which can also include toxic substances such as benzene derivatives or polycyclic aromatic hydrocarbons (PAHs). These compounds can cause health issues ranging from temporary dizziness to hepatic or nervous system damage, as well as potential long-term effects like carcinogenicity. While some modern paints are designed to have low or no VOCs, these compounds are still present in smaller amounts and can be odourless yet harmful. To minimise the impact of VOCs and odours, proper ventilation during and after painting is recommended, such as opening windows or using fans. Additionally, air filters, charcoal, or vinegar can help reduce the smell of paint.
| Characteristics | Values |
|---|---|
| Intensity | Varies from mild to strong |
| Notes | Alcohol-like, fruity, pungent, citrus-like, gasoline-like, plastic-like, turpentine-like, sweet, clay-like |
| Cause | Volatile organic compounds (VOCs) decaying, presence of toxic contaminants, insufficient preservatives, mold spores, interaction with base coat |
| Health Risks | Temporary dizziness, hepatic or nervous damage, carcinogenic effects, miscarriage in pregnant women |
| Solutions | Use of odor-blocking primer, air purifiers, ventilation, coffee, vinegar, charcoal, repainting |
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What You'll Learn
Paint smell and health hazards
The smell of paint is often described as an unpleasant, pungent odour. However, the "new paint smell" is often welcomed as a sign of a fresh start or a sense of accomplishment. While it may be tempting to ignore the smell of paint as a harmless inconvenience, the truth is that paint fumes can be harmful to your health.
Paint fumes are created when paint is applied to a surface, and the solvents in the paint begin to evaporate. These fumes contain a mix of chemicals, including volatile organic compounds (VOCs) and other toxic substances, such as formaldehyde, toluene, xylene, and benzene. These chemicals can linger in the air long after the painting is complete, and even low-odor or "eco-friendly" paints can emit VOCs. The intensity of the odour is not a reliable indicator of danger, as some harmful chemicals are nearly odourless.
The side effects of paint fume exposure can vary depending on the duration of exposure, the type of paint, and individual health factors. Short-term exposure to paint fumes may cause mild irritation, headaches, dizziness, nausea, and difficulty concentrating. Prolonged or repeated exposure to high levels of VOCs and other chemicals in paint fumes can contribute to more severe conditions, including respiratory issues, liver and kidney damage, neurological disorders, and certain types of cancer. Vulnerable groups, such as pregnant women, infants, elderly individuals, and people with pre-existing respiratory or cardiovascular conditions, face heightened risks.
To reduce exposure to paint fumes and protect your health, it is essential to maximise ventilation during and after painting. This can be achieved by opening windows and doors and using fans to circulate fresh air. In addition, air purification systems with HEPA and activated carbon filters can effectively capture VOCs. Absorption methods, such as placing bowls of activated charcoal or baking soda around the room, can also help neutralise odours and improve air quality.
While modern paints have reduced VOC content compared to older paints, it is still crucial to take preventative measures and prioritise ventilation and air quality during and after painting to safeguard your health.
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Paint odour lasting months
Paint odours can be caused by a variety of factors and can last for varying lengths of time, from a few weeks to several months, and even up to a year in rare cases. The duration of the odour depends on various factors, including the type of paint used, the presence of adequate ventilation, and the use of odour-removal methods.
One of the primary reasons for persistent paint odours is inadequate ventilation. Rooms with limited ventilation or intense sunlight can intensify fumes and cause them to linger for extended periods. To mitigate this issue, it is essential to ensure proper airflow during and after painting. Opening doors and windows, using fans or air conditioning, and investing in air purifiers with HEPA filters can effectively reduce paint odours and improve indoor air quality.
The type of paint used also plays a significant role in the persistence of paint odours. Modern paints typically off-gas for only a few weeks, while older paints may take up to a month or two to fully cure and off-gas. Additionally, the presence of volatile organic compounds (VOCs) in paint can prolong the odour. These compounds continue to release from dried paint, lingering in the air for weeks or even months. To address this, individuals can opt for low-VOC or zero-VOC paint options, which help reduce odours and potential health risks associated with VOC exposure.
In some instances, the paint odour may be mistaken for other smells in the environment. For example, the building itself may have a particular odour that is similar to paint, or other factors such as flooring, glue, or carpet could be contributing to the smell. It is important to investigate and identify the source of the odour accurately before attempting to address it.
To effectively manage paint odours, it is recommended to start using odour-removal methods as soon as the painting process begins. Baking soda, dry coffee grounds, vinegar, and diatomaceous earth are natural deodorizers that can be placed in bowls around the room to absorb paint fumes. Additionally, using natural extracts like vanilla and peppermint, or lighting scented candles, can help eliminate paint odours and create a more pleasant indoor environment.
In rare cases, paint odours may persist for an extended period, such as several months or even a year. This could be due to a variety of factors, including the use of exterior products that rely on sunlight to cure, or a reaction between the paint and the base coat. However, such instances are uncommon, and typically, paint odours should dissipate within a few weeks to a few months.
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Paint types and their smells
Paint can have a variety of smells depending on its type, ingredients, and pigments. While some paints have a subtle scent, others can have a strong odour that lingers long after application. Here are some common paint types and their associated smells:
Water-based Paints
Water-based paints, also known as latex or acrylic paints, are known for their mild scent. They typically emit fewer fumes compared to other types of paint and are considered safer for indoor use. While the smell of water-based paints usually dissipates within a few days, it can linger for longer in rooms with limited ventilation or intense sunlight.
Oil-based Paints
Oil-based paints, on the other hand, have a stronger and more distinct odour. They contain volatile organic compounds (VOCs) that can cause irritation to the eyes, skin, and respiratory tract. The fumes from oil-based paints may take longer to dissipate, and proper ventilation is crucial when using these types of paints.
Solvent-based Paints
Solvent-based paints, similar to oil-based paints, can have a strong smell due to the presence of solvents. These paints may cause more irritation than water-based paints and are known for their long-lasting fumes. Proper ventilation and respiratory protection are essential when working with solvent-based paints.
Artists' Acrylic Paints
The smell of artists' acrylic paints can vary depending on the pigments used. In most cases, the odour is not influenced by the pigments alone. However, there are exceptions, such as a black pigment with elevated levels of PAHs linked to the usage of Carbon Black. Generally, artists' acrylic paints may be described as having alcohol-like, fruity, pungent, or turpentine-like notes.
Sour-Smelling Paint
In some cases, paint can develop a sour or rancid smell, resembling sour milk or urine. This is often an indication of mould spores or improper mixing. Using sour paint can lead to allergic reactions and health issues, and it is generally recommended to discard such paint and properly ventilate the area.
It's important to note that modern paints are designed to off-gas for only a few weeks, and lingering paint smells for extended periods may indicate an issue with the paint or application process. Proper ventilation, the use of natural odour absorbers, and ensuring adequate drying time can help mitigate paint odours.
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Reducing paint odours
The smell of paint is often described as pungent and chemical, with some people noting that it can cause dizziness and headaches. Some paints have a fruity or citrus-like odour, while others are more alcohol-like or turpentine-like. The smell of paint is caused by the release of volatile organic compounds (VOCs), which can be harmful to human health in high concentrations.
If you are looking to reduce paint odours, there are several effective methods to consider:
Ventilation
One of the simplest ways to reduce paint odours is to ensure proper ventilation during and after painting. Open windows and doors to allow fresh air to circulate and dilute the concentration of paint fumes. If possible, continue ventilating the space for several days after painting to ensure that any remaining odours dissipate.
Charcoal
Charcoal is a powerful odour neutralizer due to its adsorbent properties. It attracts and traps odour-causing molecules, including VOCs. Place charcoal briquettes, powder, or activated charcoal bags throughout the room and leave them for a few days to effectively reduce paint odours.
Onions
Onions contain chemicals that can help absorb and neutralize paint odours. Cut an onion in half and place it in a small bowl with the cut-side up. You can also add a few drops of essential oil to a cotton ball and place it beside the onion to mask the smell of the onion.
Air Purifiers
Using an air purifier can help reduce paint odours and improve the overall air quality. Run an air purifier continuously in the room for several days after painting to help remove paint fumes and other airborne contaminants.
Low or Zero-VOC Paints
When selecting paint, opt for low or zero-VOC products to minimize odours and potential health risks. VOCs are volatile organic compounds that contribute to the strong smell of paint and can have short- and long-term toxic effects. By choosing low or zero-VOC paints, you can significantly reduce paint odours and create a healthier environment.
Other Methods
Other methods to reduce paint odours include using natural odour absorbers like baking soda or vinegar. Placing bowls of vinegar in the room can help neutralize paint smells. Additionally, ensuring that the paint is completely dry and cured can help reduce odours, as wet paint tends to smell stronger.
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Paint smell and building materials
The smell of paint is often described as "pungent", with "fruity" or "citrus-like" notes. Some have also described it as "alcohol-like" and "turpentine-like". The odour is caused by the volatile organic compounds (VOCs) in the paint decaying. VOC-containing paints can be harmful to those who are pregnant and can cause anything from temporary dizziness to hepatic or nervous system damage.
If you are dealing with a paint smell that won't go away, there are several steps you can take to address it. Firstly, identify the source of the odour. Check if the paint is fully dry and cured by touching it. If it's dry, try wiping it with a wet towel to see if any paint comes off. If there is paint residue, this could be the source of the smell.
Next, try to ventilate the area by opening windows and turning on fans. Charcoal or vinegar can also help absorb the odour. If the smell persists, consider using a heavy-duty respirator and applying a paint thinner to scrub the walls, followed by a primer and sealer.
In some cases, the paint smell may be due to the building materials used. For example, cheap carpets or carpet pads can have an odd smell that lingers. It could also be that the building itself has a particular odour that is being associated with the smell of paint.
To prevent paint smell issues, it is important to select high-quality paint products and ensure proper ventilation during and after painting. Some paints labelled as "low VOC" may still have odour issues, so it's important to do your research and read reviews before purchasing.
By following these steps and being mindful of potential issues, you can effectively manage paint smells and create a comfortable and healthy living or working space.
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Frequently asked questions
The smell of paint is often described as "new paint smell" or “foul” and “rancid” like “sour milk”. The odour comes from the volatile organic compounds (VOCs) in the paint decaying, which can also include toxic substances.
If you are looking to reduce the smell of paint, you can use a HEPA air filter or charcoal to absorb the odours. You can also try to ventilate the area by opening windows or using fans.
It is possible for paint to continue to off-gas for a long period of time after it has been applied. This means that even if the paint is dry, it is still releasing VOCs into the air, which can be detected by those with sensitive noses.
Yes, the smell of paint can be a warning sign that a substance is harmful. Those with scent-triggered health issues may find new paint smells unbearable and experience symptoms such as headaches and watery eyes.
To get rid of the smell of paint, you can try using white vinegar, which can help to neutralise the odour. You can also try to cover up the smell with something else, such as a fan or air freshener.
