The uncontrolled burning of solid wastes at Olusosun disposal site, Lagos State, Nigeria creates smoke that affects the environment while the gas emission causes a public nuisance. This paper describes a study carried out at the Olusosun dumpsite with the objective of correlating the exposure factors (smoke, odor and dust) with health hazards of its workers. The correlation analysis between sex of workers, years of service, different ailments and exposure factors showed a positive correlation between eye irritation and dust at 0.05 and also between difficulty in breathing and smoke at 0.01 levels of significance; likewise between typhoid and dysentery and also malaria and dysentery at 0.01 and 0.05 levels of significance respectively. The percentage of research diseases as they affect the dumpsite workers and the scavengers are 86% eye irritation, 66% difficulty in breathing, 48% asthma, 90% cough, 10% pneumonia, 82% malaria, 46% typhoid, 44% dysentery, 42% cholera and 96% fatigue. This shows that open dump solid wastes disposal affects the health of the dumpsite workers.

Keywords: Gas emission, health, open dump, dumpsite workers.