Yes. Pollution-driven asthma (primarily caused by PM2.5 and ozone exposure) often involves a different type of airway inflammation — neutrophilic rather than eosinophilic — which responds less well to standard inhaled steroids. Many Delhi patients have a mixed phenotype (both allergic and pollution-driven), which requires a personalised treatment approach. Dr. Dixit Kumar Thakur at Pulmovista specialises in identifying and treating these complex, overlapping asthma phenotypes.