Is Your Air Freshener Making Indoor Mold More Toxic?

The Hidden Interaction in Your Air

You probably think of mold and air fresheners as separate problems. A 2026 study published in the Journal of Hazardous Materials proves that assumption is wrong. Researchers found that when common air fresheners interact with Aspergillus fumigatus—a mold species found in many homes—the result is a toxicological cocktail that is more harmful to human cells than either one alone.

The study, which you can read here, analyzed the chemical composition of two common air freshener brands. They discovered that these products contain compounds that don't just mask odors. They actively interact with indoor mold, potentially increasing the cytotoxic effects on your lungs. The chemicals in your spray aren't just sitting in the air. They are chemically altering the environment your family breathes in every day.

Stop Spraying, Start Clearing

Manufacturers are formulating these products without considering how they react with the biotic components already in your home. You are essentially paying to make your indoor air quality worse. The solution isn't to buy a different scent. It is to remove the source of the synthetic chemicals entirely.

If you want to freshen your space, stop relying on aerosolized pollutants. Open a window, use a high-quality HEPA air purifier to actually remove particulates, or explore non-toxic home alternatives that don't rely on synthetic chemical reactions. Your lungs don't need a fragrance. They need clean air.

Source: Salana S, Friedman AM, Austin J, Shrestha P, Kurmi K (2026). J Hazard Mater.