Sirsa inspects anti-smog systems, warns violators in Delhi. Delhi Environment Minister Manjinder Singh Sirsa inspected anti-smog guns and water mist systems in the NDMC area Monday, warning of strict action against non-compliant buildings, hotels, and construction sites. Restrictions on sub-BS-VI vehicles entering Delhi begin November 1. Over 2,200 polluting industrial units have been sealed since October 1 under the Winter Action Plan.