A recent study has revealed that common household air fresheners, candles, and diffusers can release potentially harmful nanoparticles into the air. Researchers at Purdue University found that these products emit volatile organic compounds (VOCs), which react with ozone – even at low concentrations – to create ultrafine particles invisible to the naked eye.
The study, conducted by researchers at Purdue University in the United States, demonstrated that using certain scented products in enclosed spaces can lead to the rapid formation of these nanoparticles. These particles, often smaller than 100 nanometers, are minor enough to penetrate deep into the respiratory system when inhaled.
These findings highlight a frequently underestimated issue: indoor air pollution. According to the research, people now spend approximately 90% of their time indoors – in homes, offices, and during commutes – making the quality of the air they breathe a critical concern.
The emitted VOCs include terpenes, molecules widely used in indoor fragrances to replicate natural scents like lemon, lavender, and pine. Scientists observed that the concentration of these particles can reach levels comparable to those generated by sources of urban pollution, such as cooking fumes or traffic emissions.
For sensitive individuals, exposure to these particles may contribute to respiratory irritation, asthma aggravation, headaches, and eye irritation. However, scientists emphasize that the long-term effects of these nanoparticles are still being studied, as their extremely small size makes their biological impact demanding to analyze.
Researchers do not necessarily recommend completely eliminating these products, but rather suggest moderate use and improved ventilation. Simple precautions can reduce exposure, including regularly airing out rooms, avoiding the simultaneous use of multiple scented products, limiting the daily use of air sprays, and prioritizing well-ventilated spaces.
The research underscores the importance of understanding the effects of these substances and improving the formulation of scented products to limit their impact on health. The findings serve as a reminder that even seemingly harmless sources, like air fresheners, can contribute to daily exposure to fine particles and potentially impact public health.
