Abstract: Formaldehyde gas, a probable carcinogen, was routinely used for decontamination prior to recertification of Class II Type A2 biological safety cabinets (BSCs) at U.S. Naval Medical Research Unit No. 3 (NAMRU-3) in Cairo, Egypt. During decontamination, the gas is released when paraformaldehyde is heated, causing exposure risks. This article describes methods used to reduce the freque…