A mystery stench engulfed different parts of Karachi Wednesday night which left many citizens baffled. 

Soon, the smell became the main topic of discussion among residents on social media. 

The obvious trolls were of course there to give their two cents too.

A Facebook page, titled Weather Updates PK, stated that the smell stemmed from a change in wind direction, but still did not get to the root cause of the foul odour. 

However, the Pakistan Meteorological Department (PMD) has yet to reveal any detail regarding the strange smell.