Take your shoes off, and leave them at the door. Using a commercial-grade doormat can reduce the amount of lead in a typical carpet by a factor of six. Some pesticides can persist for decades in carpets, where sunlight and bacteria cannot reach to break them down. Or consider using large area rugs made from natural fibers that don't outgas toxic chemicals or require the use of toxic adhesives. It will be easier to remove and recycle, and there will be no glue to outgas.
Most vacuums only remove larger dust particles, while kicking up the finer particles.
Open doors and windows when you do vacuum, and send children and pets out of the room. Avoid indoor pesticides. Even when used as directed, these chemicals can circulate in dust particles well beyond safe levels for weeks after application. Improve Ventilation Avoid indoor pesticides. Even when used as directed, these chemicals can circulate in dust particles well beyond safe levels for weeks after application.