Which of the following can help in improving indoor air quality?

Regular cleaning and maintenance play a vital role in improving indoor air quality. This practice helps to eliminate dust, allergens, and pollutants that accumulate in indoor environments. Over time, surfaces within a home or building can collect dirt, pet dander, mold spores, and other contaminants that can negatively impact the air quality and contribute to respiratory issues and allergies. By routinely cleaning floors, carpets, and surfaces, as well as maintaining HVAC systems to ensure they are functioning properly and free of dust and microbial growth, indoor air quality can significantly improve.

Additionally, proper maintenance of air filtration systems helps keep the air circulating clean, which further reduces the presence of airborne particles and contaminants. Regular cleaning also includes activities such as vacuuming with HEPA filters, using air purifiers, and addressing any signs of water damage or mold, all of which are crucial for maintaining a healthy indoor environment.

In contrast, the other options presented would likely exacerbate indoor air quality issues rather than improve them.