Amid Air Quality Index (AQI) levels in Delhi entering 'severe plus' category, an oxygen bar in Saket claims to offer pure oxygen to its customers, in seven different aromas, starting from ₹299. "We are also offering portable oxygen cans to the customers," the store operator said. The bar offers oxygen in lemongrass, orange, cinnamon, spearmint, peppermint, eucalyptus and lavender fragrances.