Use cleaning products with low fumes and no fragrances.
Vacuum regularly to remove dust.
Change out air filters every couple of months (or more, if necessary).
Find the right humidity — NHS Choices recommends an optimal humidity level of 40 to 70 percent
Sick building syndrome (SBS) is a condition that can be caused by poor indoor air quality, and symptoms often improve when you leave the building. To improve the air quality in your home, you can try: Increasing ventilation: Open windows or install ventilation bricks or fans. Maintaining HVAC systems: Clean and replace filters regularly, and operate the system to meet local building code standards. Using low-VOC products: Choose paints, adhesives, and cleaning products with low volatile organic compounds (VOCs) and no fragrances. Storing chemicals properly: Store chemicals in well-ventilated areas, and use them when the building is unoccupied. Testing for mold and fungus: Get your home tested for mold or fungus. Reducing stress: Take regular breaks, and try to reduce stress. Improving lighting: Consider adding more lamps, or using LED or blue lights