At least 40 villagers undergo treatment. Panic spread among the residents of Maitapur area under the Simulia police station in Baleswar district after they began to experience an irritating smell of gas late on Saturday evening. The gas emanated from a neighbouring private pesticide manufacturing unit Krishi Rasayan. The unit near National Highway-5 on the border between Baleswat and Bhadrak has been functioning over the last two decades.