Houseplants can help improve indoor air quality to a modest degree by absorbing carbon dioxide, releasing beneficial moisture through transpiration, and capturing some airborne particulate matter on their leaves and stems. Certain popular indoor plants, such as snake plants, spider plants, and peace lilies, have been studied for their ability to filter minor volatile organic compounds out of sealed testing chambers. However, botanists and environmental scientists emphasize that plants alone cannot replace mechanical ventilation and high-efficiency air purifiers in real-world homes. While greenery contributes positively to overall well-being and removes trace chemical vapors, achieving truly clean indoor air requires proper HVAC filtration, controlled humidity, and a reliable supply of fresh outdoor ventilation air.
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