She was chairing a meeting on smog prevention, here on Monday. The Environment Department briefed the Commissioner on the Smog Calendar 2025, highlighting that smog in Lahore typically begins in the first week of October. Issuing strict directives, Commissioner Marryam Khan said that environmental squads must be fully mobilized within 24 hours with the support of PERA force. The Commissioner emphasized zero tolerance against smog, making it clear that brick kilns found emitting black smoke would face demolition, and the respective Assistant Commissioners would be held accountable. She added that all 556 brick kilns in Lahore are operating on zig-zag technology, and any violation of instructions would lead to stern action.