Despite hazardous pollution in Delhi-NCR, schools aren't fully shut, some parents are complaining that some school authorities are still calling students physically to present in the schools, violating Dm's order. Some have shifted to hybrid learning (online + physical) for Classes 1-9 & 11 as per GRAP-4, allowing choice, while younger kids (Pre-Nursery-V) go fully online in Noida/Ghaziabad due to severe AQI, balancing safety with learning continuity under government orders. Now the situation, why parents are worried, because in Delhi Ncr there is a fog blanket, so fog acts as a storage medium for pollutants by scavenging them from the air and trapping them close to the surface, accelerating chemical reactions that create a hazardous mix called smog. Once dissolved in the fog droplets, these trapped gases oxidize much faster than they would in dry air, turning into sulfates, nitrates, and other types of harmful aerosol particles. Inhaling smog can cause significant health issues, including eye irritation, coughing, difficulty breathing, and long-term respiratory problems like asthma, bronchitis, and pneumonia. Essentially, the fog provides a moist environment and a physical mechanism to concentrate pollutants, making the air quality significantly worse during foggy conditions.