Mumbaikars woke up to a blanket of smoke-filled fog on Thursday morning, with smog hugging the city's skyline. Not surprisingly, there were free-wheeling comparisons with Delhi and Beijing. Officials from the Indian Meteorological Department confirmed the presence of thick smog over South Central region of the city but refused further comment. A spokesperson for the Maharashtra Pollution Control Board (MPCB) that said that there was heavy smog over the eastern and central suburbs of Mumbai, especially around the Chembur and Deonar areas, reported DNA We took to Twitter to help to us through the smog gripping the city. And most people didn't have the foggiest idea about what was going on!

Dense fog in Mumbai. Or is smog? Already complaining of throat irritation. #WeirdWinter

— Chashme Baddoor (@ImChashmish) January 28, 2016

Is the entire city engulfed in smog or is it just Worli? #Mumbai #pollution

— Anirudh Challa (@thewanderingowl) January 28, 2016

Is it #Fog or #Smog in Mumbai? #Pollution pic.twitter.com/ilPQ11JIJw

— Amit (@amitarte) January 28, 2016

Smog covers over Mumbai. Heaviest I have seen. #MumbaiMeriJaan pic.twitter.com/kawGh0P2FP

— bruhadees (@bruhadees) January 28, 2016

Very heavy smog in #Mumbai today. Scary #pollution levels. This is Lower Parel at 10:15 am pic.twitter.com/A8qu9Qx6yO

— Vishakh Rathi (@vishakhrathi) January 28, 2016

I look out of Indiabulls and all I see is Smog! @RidlrMUM crazy pollution in Mumbai today pic.twitter.com/ES9re8Mi8z

— Shivangi Prabhudesai (@ShiviStormborn) January 28, 2016

Mumbai smog today pic.twitter.com/yJVH0926Uc

— Kayezad E Adajania (@kayezad) January 28, 2016

Terrible Mumbai smog today with zero visibility. See pics of same view on a clear day vs today am. #Mahalaxmi #Smog pic.twitter.com/6T6MPPdjtV

— Vikram Chachra (@lemonandice) January 28, 2016

The smog over Chembur, which has among the worst air quality in Mumbai city. Illegal burning at dump ground to blame pic.twitter.com/CbW2kXqgJK

— Malathy Iyer (@MalathyIyerTOI) January 28, 2016