Which types of allergens are most likely to be found in undisturbed air in homes?

The most likely allergens to be found in undisturbed air in homes are primarily related to animals, such as cat and dog allergens. When people think about indoor air quality and the substances that populate it, they often overlook the fact that pet dander, saliva, and urine can easily become airborne, especially in spaces where pets spend time. These particles are lightweight and prismatic, allowing them to remain suspended in the air for extended periods.

In comparison, while ragweed and pollen are significant outdoor allergens, they are less likely to be significant contributors to indoor air quality, particularly in undisturbed spaces. Dust mites and mold are also common indoor allergens but tend to be associated with specific conditions, like moisture or clutter, and may not be as prevalent in the air itself without disturbances that would send these particles airborne. Cockroach allergens can be a concern, but they are more often related to their droppings and fragments, which tend to accumulate in certain areas rather than being present in undisturbed air. Latex is typically associated with direct contact or exposure rather than being airborne.

Thus, the presence of cat and dog allergens in undisturbed indoor air makes them the most likely culprits when considering common allergens found around the home, as they