ABTRACT Background Children from low- and middle-income countries are particularly vulnerable to air pollution, a major environmental health risk, due to the immaturity of their lungs and their proximity to sources of household pollution. This study aimed to investigated the effect of exposure to biomass combustion through domestic and maternal occupational activities on respiratory health of children living in disadvantaged urban areas of Abidjan, Cote dIvoire. Methods Between February and December 2023, we conducted a cross-sectional observational study among children