The document proposes a concept to help reduce smog levels in Delhi using controlled artificial rain. It suggests installing vertical conical tunnels equipped with fans, pipes with shower nozzles, and water collection tanks. The tunnels would suck in polluted air from the bottom, spray it with water droplets of different sizes to "wash" the particulates, and expel cleaner air from the top. Initial trials could be conducted near polluted areas to monitor effectiveness. The author believes cooling tower manufacturers could build these units, which would cost less than 2 lakhs each and treat 1 million cubic meters of air daily. Feedback on this approach is requested.