Off-gassing (or outgassing) is the release of chemicals from solid materials into the air as gases. This process is common in many household products, particularly those made with synthetic materials, adhesives, or chemical treatments.
The familiar "new car smell" or "new mattress smell" is actually the smell of chemicals off-gassing. While some off-gassing is temporary and dissipates within days or weeks, some products continue to release chemicals for months or even years.
Products that commonly off-gas include:
- Foam mattresses and furniture
- Carpets and rugs
- Pressed wood products (plywood, particleboard)
- Paints and finishes
- Vinyl flooring
To minimize exposure, choose products certified for low emissions (GREENGUARD Gold), opt for natural materials when possible, and ensure good ventilation when bringing new products into your home.