Are latex mattresses safer than memory foam?

A low VOC result alone does not prove a mattress is safer; individual VOCs can vary in toxicity. EPA says it has no authority to regulate household products from an indoor-air-quality perspective.

A study of two new memory-foam mattresses found emissions below available health-based benchmarks for the individual chemicals studied. That result does not establish that all memory-foam mattresses have the same emissions.

“Low-VOC” describes emissions, not whether a mattress uses natural materials. New-mattress odor can also refer loosely to any scent, not just VOC emissions.

Memory foam and latex differ in feel, and sleep position can help guide firmness: side sleepers often prefer softer surfaces, while back and stomach sleepers typically need a firmer feel.

Memory foam

Memory foam molds to the body with weight and warmth and is often used in comfort and transition layers.

• Check foam density: under 3 PCF is low, 3 to 5 PCF is medium, and over 5 PCF is high.
• If looking for lower-emission foam, check whether it is CertiPUR-US certified; certified foam has emissions below 0.5 ppm.
• Memory foam responds more slowly and has a sinking sensation compared with latex.

Natural latex odor

Natural latex is more responsive and breathable than memory foam, with a buoyant feel and easier movement.

• One maker says it can air out a mattress before delivery for people very sensitive to smell.

A new mattress can release odors, but odor and VOC emissions are not the same thing.

In a simulated-use study of two new memory-foam mattresses, associated airborne VOC concentrations peaked on the first day and declined over the following 31 days. The study’s modeled emissions for those two mattresses were within available indoor-air-quality recommendations for total VOCs.

Natural-material scent can come from wool or latex, and truly natural latex should not let off odors associated with VOCs, though it may have a slight rubbery smell. Opening a mattress-in-a-box can release odors trapped by vacuum-sealed packaging.

• One mattress maker suggests unwrapping a new mattress promptly, placing it in a well-ventilated room, and using a fan or open windows to increase airflow.
• Ventilation can dilute indoor emissions; EPA notes that inadequate ventilation can raise indoor pollutant levels.
• Tempur-Pedic says a slight odor from its material usually fades within one or two weeks and suggests airing the mattress for a couple of days.

Do not assume “latex” means all-natural latex; ask the maker for the natural-to-synthetic breakdown.

Natural latex is made from rubber-tree sap, while synthetic latex uses petrochemicals. A blended latex may aim to combine natural latex’s elasticity with synthetic latex’s consistency and durability.

• If a maker does not say its latex is natural, GoodBed says it is likely synthetic latex or a blend.
• One latex maker says its Dunlop latex is 100% natural; verify claims for the specific product.
• One maker describes its finished latex as 98% pure rubber, with the remainder made up of manufacturing ingredients.
• Truly natural latex may have a mild rubbery smell but should not release odors associated with VOCs.

Certifications cover specific materials or tests, not every part of a mattress.

CertiPUR-US covers flexible polyurethane foam. OEKO-TEX STANDARD 100 sets a textile-safety benchmark from yarn through finished textile product.

• Check a company in the CertiPUR-US online directory to verify participation.
• Scan an OEKO-TEX label’s QR code or enter its certificate number in the Label Check to check validity.

Ask the maker what the mattress contains.

Fiberglass may be in a mattress cover or a fabric sock over the foam core. A mattress label may omit fiberglass even when it is present.

• Do not assume a zipper means the cover is meant to come off; check care instructions or contact the maker first.
• Contact the manufacturer with questions about mattress contents.
• One mattress maker says it uses wool as a fire barrier instead of artificial flame retardants.

If you are scent-sensitive, ask about the exact materials and airing options before ordering.

A natural or organic latex mattress can have an initial rubber odor. A natural-material smell does not by itself establish that a mattress is emitting synthetic VOCs.

• Ask whether the maker can air out the latex mattress before delivery; one maker offers this for customers very sensitive to smell.
• Naturepedic says its new-mattress scent typically fades within a few weeks and that airing can help it dissipate faster.
• EPA identifies ventilation and pollutant-source management as parts of maintaining indoor air quality.
• EPA says the importance of an indoor pollutant source depends partly on its emissions, their hazards, and the sensitivity of people exposed.

For memory foam, check the exact model, foam certification, and full materials list.

• Cross-check the company in CertiPUR-US’s online directory rather than relying only on a logo or salesperson’s statement.
• Ask about foam type and density when comparing durability; the cited guide says high-density foam tends to last longer than low-density foam.
• Check the full materials list; Naturepedic says there are some instances where it needs to use synthetic materials for performance requirements.
• Check the construction: in all-foam mattresses, comfort layers may use memory foam, polyfoam, latex, or a combination of materials.

Can memory foam be low in VOC emissions?

CertiPUR-US says certified foam has VOC emissions below 0.5 ppm, but that applies to the foam, not necessarily the whole mattress.

Does natural latex have a new-mattress smell?

Yes, natural latex can have a new-product odor, even when described as natural or organic. One latex maker says its latex odor typically dissipates within 1 to 2 weeks.

Does CertiPUR-US certify a whole mattress?

No. CertiPUR-US certifies flexible polyurethane foam, not a whole mattress. A mattress can also contain a latex layer, which is outside the program’s certification scope.

We read 18 published pages from 11 sites (epa.gov, naturesembracelatex.com, CertiPUR-US, Sleep Foundation and 7 more), checked in October 2026. Every sentence in the answers above cites one of them; the offer card at the end names its own source. This page reports published sources only; we did not test mattresses in person.