Open all windows and doors in the room or area you are painting or have been painting so the paint fumes can escape the area.
Place a box fan in one of the windows with the fan's blades and front controls facing the window’s screen. This allows the fumes to be drawn into the fan and escape outdoors.
Place another box fan in a doorway that leads to the outside of your home or business. Also aim this fan so its blades and controls are facing outdoors.
Leave the fans running and the windows/doors open for approximately 48 hours after painting to air out the room or area.
Close any open containers of paint immediately after finishing your painting project. Wash any brushes and rollers in cold water and then place the items in an outdoor location to keep any lingering fumes from emitting off of the items’ material. Cold water will keep the brushes' and rollers' material from shrinking.