White sage is probably the most common and popular herb for smudging. It is associated with purity and has a strong and heavy presence. It's definitely useful for when you need a major space cleansing.
Sage smoke offers rapid delivery to the brain and efficient absorption to the body. Scientists have observed that sage can clear up to 94 percent of airborne bacteria in a space and disinfect the air. When sage is burned, it releases negative ions, which is linked to putting people into a positive mood.