Research shows that medicinal smoke (from burning a traditional mixture of wood and odoriferous/medicinal herbs, known as havan sámagri) physically sanitizes air for up to 24 hours by eliminating over 94% of airborne bacteria.

Research shows that medicinal smoke (from burning a traditional mixture of wood and odoriferous/medicinal herbs, known as havan sámagri) physically sanitizes air for up to 24 hours by eliminating over 94% of airborne bacteria.Ancient traditions are receiving a scientific nod as researchers discover the potent air-purifying properties of medicinal smoke. A landmark study revealed that exposing a confined space to this smoke for just one hour can reduce airborne bacterial populations by over 94%. This sanitizing effect isn’t just a fleeting moment of freshness; the treated air remained largely disinfected for a full 24 hours, with certain pathogenic strains remaining undetectable for as long as 30 days. The smoke is believed to possess natural antiseptic properties that effectively scrub the environment of harmful microorganisms.While many utilize practices like this to clear negative energy or repel insects, the physical benefits of medicinal smoke offer a tangible upgrade to indoor air quality. However, the practice is not without its risks. Health experts warn that inhaling smoke particulates and carbon monoxide can trigger respiratory distress, particularly for individuals with asthma or pre-existing lung conditions. For those seeking cleaner air without the smoke exposure, modern HEPA air purifiers remain a safer, more consistent alternative, even if they lack the deep cultural and spiritual significance associated with this ancient ritual.Source: Nautiyal, C. S., Chauhan, P. S., & Nene, Y. L. (2007). Medicinal smoke reduces airborne bacteria. Journal of Ethnopharmacology, 114(3), 446–451.Key clarifications (without changing the core message):

• The study used a specific Indian herbal mixture (havan sámagri), not white sage or Native American smudging herbs. Many online articles have misapplied the 94% figure directly to sage, but the research did not test sage itself.
• The reduction was over 94% after 60 minutes of exposure in a closed room, with effects lasting up to 24 hours (and some pathogens absent for 30 days in follow-up observations).
• The benefits are tied to the antimicrobial compounds released in the smoke, but risks from inhalation remain valid.