Why New Rugs Smell and How to Reduce Offgassing

Why new rugs smell

The smell you notice when a new rug comes out of its package is the release of volatile organic compounds (VOCs). These are chemicals that evaporate into the air at room temperature, and they come from a range of sources inside the rug itself: synthetic fibers such as polypropylene and nylon, the latex adhesive used to bind the backing, dyes and colorants, stain repellent treatments, and the plastic packaging that traps the gases until you unroll it.

According to the US EPA, VOCs are emitted by a wide array of products, and concentrations of many VOCs are consistently higher indoors than outdoors, sometimes up to ten times higher. Common household sources include paints, solvents, adhesives, and furnishings. When a new rug is tightly rolled in plastic for weeks or months in a warehouse, the gases concentrate in the package, so the smell is strongest the moment you unwrap it.

Different rugs smell differently depending on what they are made of. A polypropylene rug may smell more strongly at first than a jute natural fiber rug, but the odor from synthetic materials often fades more quickly once the rug is aired out. Natural fiber rugs like wool and jute may have a musty, earthy smell that some people find pleasant, but they rarely produce the sharp chemical odor associated with synthetic backing and latex adhesives.

What are VOCs and are they harmful?

VOCs are a large group of chemicals that share one trait: they evaporate easily into the air. The EPA lists many common household products as sources, including paints, varnishes, wax, cleaning supplies, and building materials. Among the most familiar VOCs is formaldehyde, which is used in some adhesives and pressed wood products. In carpets and rugs, VOCs come mainly from the backing adhesive and the synthetic face fibers.

Exposure to VOCs can cause a range of short-term symptoms. The EPA lists eye, nose, and throat irritation, headaches, loss of coordination, and nausea as possible effects. Some people are more sensitive than others, and sensitivity varies from person to person. Children, the elderly, and people with respiratory conditions such as asthma may react more strongly. In the long term, some VOCs are known or suspected to cause cancer in humans, although the EPA notes that not much is known about health effects from the levels usually found in homes.

The good news is that the strongest offgassing is temporary. Most rugs release VOCs at the highest rate during the first few days, then the level drops off as the chemicals finish evaporating. For people who are particularly sensitive, the solution is not to avoid rugs altogether but to choose low-emitting products and to provide plenty of fresh air during the first weeks, as the EPA recommends increasing ventilation when using products that emit VOCs.

Choosing a low-emitting rug

The easiest way to avoid a strong chemical smell is to choose a rug that has already been tested for low emissions. The Carpet and Rug Institute (CRI) runs the Green Label Plus (GLP) program, which the organization describes as ensuring that customers are purchasing among the lowest emitting carpet, adhesive, and cushion products on the market. When a rug or carpet carries the GLP label, the manufacturer has paid for independent laboratory testing and the product meets a strict set of VOC emission limits. You can search for certified products through CRI's website, or simply look for the GLP logo or the words "Green Label Plus" in a rug's description.

Beyond certification, consider what the rug is made of. Natural fiber rugs such as jute, wool, sisal, and seagrass do not require the chemical treatments that synthetic fibers do, and they are widely regarded as lower in VOCs. However, even natural fiber rugs may have a latex backing to keep them from slipping, and that latex can be a source of odor. If you want to avoid latex altogether, look for handwoven rugs with no backing at all, such as flatweave rugs, which are simply woven and do not need an adhesive layer.

Another clue is the label. US federal law requires that most textile products carry a label listing the fiber content, country of origin, and the identity of the manufacturer or another business responsible for marketing the item, as the Federal Trade Commission explains. If you are concerned about what is in a rug, read that label: the fiber content will tell you whether the face is polypropylene, polyester, wool, or a blend, and the country of origin can be a clue about manufacturing practices, though it is not a guarantee of anything. A rug with a clear fiber content label and a recognized brand is more likely to have been tested than one that gives no information at all.

When you compare rugs by pile weight and density, you are looking at how much fiber is packed into each square inch. Dense rugs with more fiber per area may actually release slightly more VOCs simply because there is more material, but the difference is small compared with the effect of the backing and any stain treatments. A dense, high-quality rug is still a good investment if you are willing to let it air out for a few days.

How to air out a new rug at home

The single most effective step is to unroll the rug and give it air. If you have a garage, a covered patio, or any outdoor space protected from the weather, that is the best place to unroll a new rug. Let it sit flat or draped over a railing for two to three days before bringing it inside. Do not leave it in direct sunlight if the rug is dyed, as that can cause the colors to fade (see our guide on rug fading). If you do not have outdoor space, choose the largest room in your home, open two windows for cross-ventilation, and point a fan at the rug to keep air moving across the surface.

The EPA recommends increasing ventilation when using products that emit VOCs, and providing plenty of fresh air. This is exactly what you are doing when you air out a rug. The temperature of the room matters, too: VOCs evaporate faster in warm air, so a warm, well-ventilated room will help the smell dissipate faster than a cold, closed one. If you are airing out a rug in the winter, you may want to leave it in a garage or shed if possible, or simply to accept that it will take a little longer indoors at cooler temperatures.

Once you bring the rug inside and lay it on the floor, the offgassing continues, but at a lower level. Keep windows open for the first week if you can, and run a box fan or ceiling fan to keep air circulating. Vacuum the rug regularly, both to remove loose fibers and dust and to keep the pile from becoming matted. Do not use any chemical sprays or deodorizers on a new rug in an attempt to mask the smell; they only add more VOCs to the air. If the smell is still bothersome after a week, consider returning the rug and choosing a lower-emitting alternative, such as one of the washable rugs from our guide.

Special considerations for sensitive individuals

People with asthma, allergies, or chemical sensitivities may react to VOCs at levels that do not bother others. The EPA notes that some people can become sensitized to biological or chemical pollutants after repeated or high-level exposures, and that the likelihood of immediate reactions depends on factors including age and preexisting medical conditions. If anyone in your home has asthma or allergies, it is worth taking the airing-out process especially seriously, or choosing a rug that is naturally low in VOCs.

The EPA's asthma guidance suggests maintaining low indoor humidity, ideally between 30% and 50%, because high humidity can increase the concentration of some indoor pollutants. It also recommends using exhaust fans or open windows in bathrooms and kitchens. These same principles apply to bringing a new rug into the home: keep the air moving, keep humidity moderate, and avoid introducing multiple sources of VOCs at the same time. Do not unroll a new rug on the same day that you have painted a room or installed new furniture, as the combined load of VOCs can overwhelm everyone's comfort.

If you are buying a rug for a nursery or a child's bedroom, the priority should be a low-emitting product. The EPA says that children's developing bodies may make them more susceptible to the effects of pollutants. For these rooms, consider a wool or natural fiber rug, which does not need stain repellent treatments, or one of the machine-washable rugs that can be laundered before use, which removes a portion of the volatile residue. And always allow a new rug to air out before putting it into a child's room, even if the smell seems mild.

How long does rug smell last?

There is no single answer that applies to every rug, because the duration of the smell depends on the materials, the manufacturing process, how long the rug was sealed in packaging, and the ventilation in your home. A thin, low-pile polypropylene rug with latex backing may smell strongly for a day or two and then be nearly odorless, while a thick shag rug with a heavy latex coating can take a week or more to fully air out. Natural fiber rugs can have a lingering earthy smell that is not chemical but that some people find just as noticeable.

What you can expect is that the smell will be strongest at first and will decrease steadily over the first two weeks. If you have aired the rug out for several days before installing it, the residual smell should be minor. If you lay the rug immediately without airing, you will be living with the peak offgassing for the first few days, so the smell will be more noticeable. In either case, it will not last forever.

To speed the process, attack the source: the backing. If the rug has a strong latex smell on the back, you can place it upside down with the back facing a fan for a day before flipping it over. Vacuum the back as well as the front, as latex dust can be released from the coating. Some people find that sprinkling a light layer of baking soda on a rug and vacuuming it off after a day helps absorb odors, but do not use this on wool rugs, where baking soda can damage the fibers. None of these steps are substitutes for time and fresh air, but they all help.

What to pick for your use

Questions

Are new rug fumes dangerous?

At the levels typically found in homes, the EPA says not much is known about health effects from VOCs in household products. Short-term symptoms can include eye, nose, and throat irritation, headaches, and dizziness. The most practical approach is to air out a new rug thoroughly before bringing it indoors, and to increase ventilation during the first week.

How long does the chemical smell from a new rug last?

It varies by material and ventilation. Expect the strongest smell for the first one to three days, and a noticeable decline over the first two weeks. If you air out the rug outside for several days before installing it, the residual smell is usually minor.

Does washing a rug remove VOCs?

Washing removes some soluble compounds and dust from the surface, which can help reduce odors, but most VOCs are inside the fibers and backing and will gradually be released into the air. For a washable rug, one full machine wash before first use can noticeably reduce the smell.

Are natural fiber rugs always low in VOCs?

Jute, wool, sisal, and seagrass fibers themselves are low in VOCs, but the rug may still have a latex backing that emits a small amount. Handwoven rugs with no backing are the lowest option. The natural materials can have a musty smell of their own, which is not airborne chemicals but may take time to fade.

What does Green Label Plus mean?

Green Label Plus is a certification from the Carpet and Rug Institute that a product is among the lowest emitting carpet, adhesive, and cushion products on the market. It requires independent laboratory testing for VOC emissions and sets a strict limit that certified products must meet.

Can I speed up the offgassing process?

Yes, by providing warmth and airflow. Unroll the rug flat, point a fan at it, and keep windows open. The EPA recommends increasing ventilation when using products that emit VOCs. Avoid chemical deodorizers, which add more VOCs to the air.