If you open any overhead cabinet of a typical Indian kitchen after a year of daily tadka and frying, you can see sticky film on the shutters, discoloration near the stove, and a varnished smell of stale oil. Then picture a few coughs when you are frying pakoras or searing kebabs, and it becomes pretty evident that the cooking aroma is traveling anywhere but the plate. https://annivercary.com/greasy-cabinets-and-smoke-a-chimney-for-kitchen-fixes-both-issues/