What is off-gassing, and are VOCs from a new mattress harmful?
New foam mattresses, furniture, and some household products release volatile organic compounds (VOCs) — the "new" smell — which typically peaks then declines over days to weeks. Certifications like GREENGUARD Gold and OEKO-TEX cap emissions to screened limits, giving a verifiable way to choose lower-emitting products.
Here is what the primary research and emissions standards we cite say about VOCs and off-gassing, and the certified low-emission products in our catalog.
Products in our catalog that address this
- Tuft & Needle Original 10" Foam Mattress The Low-Tox Home
- Pure Green Natural Latex Mattress Topper — Medium Firmness — 2 Inch — Queen (GOLS Certified Organic) The Low-Tox Home
- Airthings 2960 View Plus — Battery Powered Radon & Air Quality Monitor (PM, CO2, VOC, Humidity, Temp, Pressure) The Low-Tox Home
- LEVOIT Classic300S Ultrasonic Smart Top-Fill Cool-Mist Humidifier, 6L Tank The Plant Parent
What the research says
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VOC emissions from new memory-foam mattresses peak immediately after unpacking and then decline over about a month.
“Airborne concentrations of chemicals associated with the mattresses (2-propanol, acetone, chloromethane, toluene, and ΣVOC) peaked during the first day after installation and progressively decayed over the course of the following 31 days.”
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Indoor VOC levels are routinely far higher than outdoors, so what you bring into a bedroom matters.
“Concentrations of many VOCs are consistently higher indoors (up to ten times higher) than outdoors.”
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Mattress foam emits VOCs, polyurethane foam emits a wider range, and new mattresses off-gas more than aired-out used ones.
“TVOC SERs were greater for new mattresses compared to used ones and were influenced by the type of foam material and the presence of mattress cover layer. A variety of VOCs were identified, with polyurethane foam releasing a greater diversity of VOCs compared to polyester foam.”
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The credible low-emission signal is an independent certification, not the word 'natural' on a label.
“Certified products are screened for more than 15,000 VOCs known to pollute indoor air.”
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PM2.5 particles are small enough to reach deep into the lungs and even the bloodstream, which is why they cannot be judged by eye or smell.
“Small particles (less than 10 micrometers in diameter) can get deep into your lungs, and some may even get into your bloodstream.”
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VOCs from paints, furnishings and cleaning products concentrate far more heavily indoors than outdoors.
“Concentrations of many VOCs are consistently higher indoors (up to ten times higher) than outdoors.”
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Rising indoor CO2 — a marker of poor ventilation — measurably degrades cognitive performance, and you cannot sense it without a monitor.
“On average, a 400-ppm increase in CO2 was associated with a 21% decrease in a typical participant's cognitive scores across all domains”
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Peer-reviewed work finds potted houseplants do not meaningfully clean indoor air in real rooms; ventilation does the work.
“necessitating the placement of 10-1000 plants/m2 of a building's floor space for the combined VOC-removing ability by potted plants to achieve the same removal rate that outdoor-to-indoor air exchange already provides in typical buildings”
Common questions
- How long does mattress off-gassing last?
- Emissions generally peak early and decline over roughly a month, per the peer-reviewed study cited below.
- What does GREENGUARD Gold certify?
- It screens for thousands of VOCs and caps total emissions to a defined limit; the sourced findings below quote the certification criteria.
- How do I reduce off-gassing exposure?
- Ventilation and choosing certified-low-emission products are the practical levers the cited sources support.
Compiled from our evidence database by The Amazonia Editors · Last reviewed 2026-06-28