Carbon monoxide fumes from a propane-fuelled forklift forced the evacuation of a US career agency on Tuesday afternoon.

Times Union reported nine people from Northeast Career Planning's office on 279 Broadway in the Village of Menands, Albany county, USA, were taken to hospitals after suffering nausea and headaches.

Ryan Henderson, assistant fire chief of the Village of Menands, said his crew spent three hours tracing the source of the fumes to the forklift and airing the contaminated space.