Household fragrance products, including plug-in air fresheners, scented candles, and laundry detergents, are significant contributors to indoor allergens that can trigger allergies and respiratory issues such as asthma and COPD. These products release volatile organic compounds (VOCs) into the air, leading to long-term health risks. The phenomenon of 'scent layering' occurs when multiple scented items are used simultaneously, compounding the exposure to harmful chemicals. Medical organizations, including the American Lung Association and the American College of Allergy, Asthma and Immunology, recommend that individuals with respiratory conditions avoid these products altogether. They emphasize that even those marketed as 'all-natural' may still contain hazardous chemicals. To mitigate these risks, experts suggest auditing the number of scented products in the home and replacing them with fragrance-free alternatives. This approach is essential, especially in spaces like bedrooms and bathrooms, where scent accumulation can be particularly intense. The safest route for sensitive individuals is to eliminate these products rather than seek less harmful substitutes.