NEW DELHI: The capital's toxin air is making it a virtual no-go destination for people from cleaner environs.America's mega carrier United has temporarily suspended flights to Delhi due to the "public health emergency" here. On Saturday morning when its daily Newark-Delhi flight was approaching IGI Airport, something that will now happen again only when the city's air clears up a bit, the airline handed over "smog masks" to all passengers on board so that they are equipped to take on the toxicity that awaits them on arrival.Tunku Varadarajan, a Stanford University research fellow who was on this flight, said passengers panicked about Delhi's air on getting the mask. "United made an announcement about the high levels of smog in New Delhi before touchdown, including information about visibility levels... the captain told passengers that, (the airline had) face masks for everyone. A flight attendant then came down to our aisle and handed each of us a mask. Many passengers looked panic-stricken. Certainly, the effect was quite dramatic," Varadarajan said.A United spokesperson confirmed giving masks to all passengers on the Saturday flight to Delhi. 'United (has) temporarily suspended Newark-Delhi flights due to poor air quality concerns in Delhi and currently has waiver policies in place for customers who are traveling to, from or through Delhi. We are monitoring advisories as the region remains under a public health emergency, and are coordinating with respective government agencies. We encourage customers who are traveling over the next several days to visit united.com or download our mobile app for the latest updates and developments" the spokesperson said.