Air purifiers are excellent for parent or baby who may suffer from allergens, dust or bacteria in the air.  Most air purifiers produce negative ions (more information below) or use other advanced technology to purify the air in the quietest and most efficient way possible.

About Negative Ions
Generally speaking, negative ions increase the flow of oxygen to the brain; resulting in higher alertness, decreased drowsiness, and more mental energy," says Pierce J. Howard, PhD, author of The Owners Manual for the Brain: Everyday Applications from Mind Brain Research and director of research at the Center for Applied Cognitive Sciences in Charlotte, N.C.

"They also may protect against germs in the air, resulting in decreased irritation due to inhaling various particles that make you sneeze, cough, or have a throat irritation."