Is it true that carpets may aggravate my allergies/asthma?

As with any surface, if the carpet is left unattended for an extended period it will eventually become dirty, causing allergic reactions to the contaminants in your home. When cared for properly, carpets actually trap dust particles instead of allowing them to continue to circulate in the air we breathe. Once the carpet has been vacuumed, the dust particles are permanently trapped and can no longer inflame symptoms of asthma or allergies.

“In 2002, two schools in North Carolina were the subject of a study conducted by Research Triangle Institue (RTI) and University of North Carolina (UNC) investigators. One school had mostly resilient tile floors, while the other was 70-75% carpeted. The study found that airborne contaminants, possible sources of allergens, were higher over the tiled floors than over carpet.
Also in 2002, Professional Testing Laboratory studied the effect of foot traffic on air quality, using commercial carpet and commercial vinyl flooring. Following 16 minutes of foot traffic over both surfaces, the particulate concentration over the vinyl floor was found to be four times that of carpet.
Other studies, including one using Computational Fluid Dynamics (CFD), have reinforced these findings and concluded that carpets actually reduce exposure to particulates and potential adverse health effects.
In a recent paper, “Carpet, Asthma and Allergies – Myth or Realty,” Dr. Mitchell Sauerhoff, Ph.D., DABT, examined numerous scientific studies and other research contradicting some long-held beliefs on carpet’s alleged negative characteristics.
Sauerhoff concluded, “…based on the available science, carpet does not cause asthma or allergies and does not increase the incidence or severity of asthma or allergies symptoms. In fact, with respect to asthma and allergies, multiple studies have reported fewer allergy and asthma symptoms associated with carpet.”