Fragranced laundry products emit numerous volatile organic compounds (VOCs), including terpenes such as limonene. Fragrance emissions have been associated with adverse health effects such as asthma attacks and breathing difficulties. Further, fragrance terpenes are primary indoor air pollutants that can react with other compounds and contribute to both indoor and outdoor air pollution. This paper examines volatile emissions and exposures from fragranced laundry products, and the implications for air quality and health. The paper synthesizes and analyzes data from studies conducted across the United States (US) and Australia (AU), providing results in three main themes: adverse health effects associated with exposure to fragranced laundry products, volatile emissions from fragranced and fragrance-free laundry products, and reductions in VOC emissions by switching from fragranced to fragrance-free products. Across the US and AU, 12.5% and 6.1% of the general population and 28.9% and 12.1% of asthmatics report health problems (respectively) when exposed to scented laundry products coming from a dryer vent. Among the volatile emissions from products, terpenes were the most prevalent VOCs detected in all fragranced laundry products; however, terpenes were absent in all fragrance-free products. By switching from fragranced to fragrance-free laundry products, dryer vent emissions of limonene can be reduced up to 99.7%. As context for significance, switching from fragranced to fragrance-free laundry detergent could reduce limonene emissions from dryer vents per household by an estimated 1.68 g/year. For the study area of metropolitan Melbourne, this represents a reduction in limonene emissions by an estimated 1.58 tons/year. Results from these analyses point to a promising way to reduce emissions and exposures to volatile compounds, and create potential improvements for air quality and health.

中文翻译：

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香味洗衣产品和烘干机通风口的排放物：对空气质量和健康的影响

加香洗衣产品会释放大量挥发性有机化合物 (VOC)，包括萜烯，如柠檬烯。香味排放与不良健康影响有关，例如哮喘发作和呼吸困难。此外，芳香萜烯是主要的室内空气污染物，可与其他化合物发生反应并导致室内和室外空气污染。本文研究了加香洗衣产品的挥发性排放和暴露，以及对空气质量和健康的影响。该论文综合并分析了在美国 (US) 和澳大利亚 (AU) 进行的研究数据，提供了三个主要主题的结果：与接触香味洗衣产品相关的不良健康影响、香味和无香味洗衣产品的挥发性排放物, 通过从加香产品转向无香产品来减少 VOC 排放。在美国和澳大利亚，12.5% 和 6.1% 的普通人群以及 28.9% 和 12.1% 的哮喘患者（分别）报告说，当接触到来自烘干机通风口的香味洗衣产品时，会出现健康问题。在产品的挥发性排放物中，萜烯是所有加香洗衣产品中检测到的最普遍的 VOC；然而，所有无香料产品中均不含萜烯。通过从有香味的洗衣产品转向无香味的洗衣产品，柠檬烯的烘干机排气口排放量可减少多达 99.7%。作为重要性的背景，从有香味的洗衣粉转向无香味的洗衣粉可以将每个家庭的干衣机通风口的柠檬烯排放量减少约 1.68 克/年。对于墨尔本大都会研究区，这意味着柠檬烯排放量估计减少了 1.58 吨/年。这些分析的结果指出了一种减少排放和挥发性​​化合物暴露的有前途的方法，并为空气质量和健康创造潜在的改善。