Burning herbs like sage - smudging- has a long tradition in ancient tribal ceremonies. White sage is known to cleanse heavy energies on a spiritual level as well as it has antimicrobal properties.
“Simply put, sage clears bacteria in the air. 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. The Latin word for sage salvia stems form the word heal. Other qualities believed to be associated with sage when burned are giving wisdom, clarity, and increasing spiritual awareness.”