[4] Activated charcoal is a quite strong natural odor eliminator
You can pick between pleated filters, which have folded fabric, and flat fiberglass filters
Criqui School of Medicine, The Chinese University of Hong Kong, Shenzhen, Shenzhen, China Xiaolin Cui Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK Mayank Dalakoti Cardiovascular Metabolic Translational Research Program, National University of Singapore, Singapore, Singapore Mayank Dalakoti Department of Community Medicine, Employees State Insurance Model Hospital, Chennai, India Roy Arokiam Daniel & Sathishrajaa Palaniraja Department of Public Health, Haramaya University, Harar, Ethiopia Samuel Demissie Darcho Center of Excellence in Precision Medicine and Digital Health, Chulalongkorn University, Bangkok, Thailand Aso Mohammad Darwesh Jadara Research Center, Jadara University, Irbid, Jordan Aso Mohammad Darwesh Division of Women and Child Health, Aga Khan University, Karachi, Pakistan Jai K

High levels of HMGB1 have been shown in acute lung injury caused by infectious and severe COVID-19 patients, therefore, it could be a therapeutic target for patients with severe COVID-19 [324]