For centuries, people around the world have burned sage and other herbs as part of spiritual and cultural rituals believed to cleanse spaces, remove negative energy, and restore balance. While some view smudging as a symbolic tradition, modern research suggests there may also be a scientific explanation behind why these practices have been used for generations.

Studies on medicinal smoke have found that burning certain herbs may have air-purifying effects by reducing airborne bacteria. A 2007 study published in the Journal of Ethnopharmacology examined medicinal smoke and found that it reduced airborne bacterial populations by more than 90% within an hour in a controlled environment. Researchers suggested that plant-based smoke may have natural antimicrobial properties.

The research does not prove that burning sage can remove “evil spirits” or replace modern cleaning methods, but it does suggest that traditional practices may have had practical benefits that people noticed long before science could explain them. Certain compounds released from burning plants may help reduce some types of microorganisms in the air.

However, experts also warn that smoke of any kind can affect indoor air quality, especially for people with asthma or respiratory conditions. Smudging should be done carefully, with proper ventilation and awareness of personal health needs. While the spiritual meaning of sage burning remains a personal belief, science suggests that this ancient ritual may have more benefits than many people once assumed.