Acute Respiratory Infection (ARI) is one of the diseases caused by indoor air pollution. The prevalence of ARI in toddlers aged 0-59 months in the Talawi Health Center working area in West Sumatra was 14.52% in 2022 and 713 in 2023. This study aims to determine the relationship between environmental factors (the use of mosquito coils, the presence of smokers in the house, and the physical condi…