We report a clinical case of a 39-year old male. without any known previous medical condition but with occupational exposure to paints and dust cement. who presented an autoimmune pulmonary alveolar proteinosis (PAP) triggered by exposure to toxic inhalation at his workplace. PAP is a rare lung disease characterized by intra-alveolar abnormal accumulation of surfactant. https://foldlyers.shop/product-category/crimp-lugs-and-terminals/