In Burkina Faso, women and their young children are the most exposed to the effects of indoor air pollution. This study investigated the risk factors associated with air pollution during meal cooking in the occurrence of Acute Respiratory Infections (ARI) in children under 5 years of age. This is a cross-sectional study that took place in two sectors of the city of Ouagadougou (sectors 15 and 17) in Burkina Faso. The study involved 608 households. The data was collected using an interview guide and an observation grid. The data was entered with Epi data 3.1 software and analyzed with Stata / SE 12.0. The associations between the variables were expressed in Odds Ratio (OR) and their confidence intervals were estimated at 95%. The prevalence of ARI was 3.5% in children under 5 years of age. In bivariate analysis, with low-standing habitats, the use of traditional and / or improved stoves, appeared to be a risk factor for ARI. In multivariate analysis, only the use of the combination ? improved stoves + wood ? was found to be significantly associated with ARI in the last 2 weeks before the study (OR = 14.703, 95% CI: 1.156 -186.887). This requires strengthening the promotion of the use of gas and conducting studies on the effectiveness of improved stoves in reducing exposure to pollutants.