KOCHI: The city residents woke up to a pungent odour following a chemical leak from a gas pipeline laid by Adani Gas at Kangarappady, triggering panic on Saturday morning. The leakage reportedly began on Friday noon and the smell intensified at night. Several residents of Kangarappady, Kalamassery, Kakkanad, HMT Colony, Edappally, and CUSAT complained about the strong chemical odour. Some experienced suffocation and uneasiness. However, the Adani Group later informed that the leaked chemical was non-toxic.