Air purifiers and masks: From top left in 2 rows:
1. Nirvana Being's designer air mask
2. Xiaomi's Mi Air Purifier 2S
3. Dyson's Pure Cool
4. PureLogic's Prana Air Motion Mask
5. Airgle air purifier.
6.Blueair's Joy air purifier
7. Sharp's air purifier wityh mosquito catcher
8.Bonphul's OxyMax oxygeb optimiser-cum-air purifier
More details in our lead story here