The city air used to be filled with smog that was caused by emission of vehicles – especially three-wheeler auto-rickshaws. You will not experience this so much these days after the faulty vehicles had been restricted from plying the roads, but if you move more towards the city center, or the older parts of the city, it begins to bother you. A growing number of people now wear masks as a measure to avoid inhaling the polluted air. If you are traveling by a car it is advisable to keep the windows rolled up.
It is advisable to carry a mosquito repellent, and also we would like to request you not to drink water from taps, as it may not be safe for drinking. Bottled drinking water is available all over the country