India ego on Instagram: "Two brand-new Honeywell V5 air purifiers arrived at a home, both identical in look and price, and both placed in the same room to create a cleaner, calmer space. When they were switched on, the family expected both machines to show the same air-quality readings. But to their surprise, the numbers on each purifier were slightly different. Both were running quietly side by side, yet each showed its own reading of the room’s air. This gentle difference likely came from smal