By Tom Gillespie @TomGillespie1
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Children as young as six also ply their trade in the processing yard - which stretches over an incredible 200 acres.
Naziratek is a dried fish yard at the confluence of the Bay of Bengal in Cox's Bazar, and is the industry's biggest yard in Bangladesh.
Up to 20,000 people work in Naziratek during peak season and process between 5 million and 6 million tons of dried fish.
Several different species of fish are dried out and processed at the yard, and the stock is sold within Bangladesh as well as being exported.
Men earn around £1.30 a day at the yard while women earn roughly £1 for doing the same work.
Around 7,500 children also work in the conditions, which can cause acne, eczema, and scabies.
Photographer Zakir Chowdhury visited the sprawling site on January 1 and was immediately struck by the pungent smell in the air.
He said: "In the early morning I started my journey towards this village.
"When I approached a putrid smell hit my nose - it was horrible.
"I saw a huge amount of fish that were drying under the sun.
"Everywhere you look its fish, fish, fish.
"People work there without any safety precautions and without holding a handkerchief to their nose.
"Its difficult to stay there for one second because of the rough smell."