well I would like to give you some experiences when a foreigner reaching this city feels like.
upon reaching here one really feels like the air is humid, water needs to be boiled before drinking, I mean the tap water. otherwise you can just buy the mineral water bottle which costs less. do not eat from small restaurants foods which are too spicy or too much chilly in it as it can get your stomach upset. you can how ever eat roasted meat, Pulao rice which is least added spices, and boiled milk otherwise your stomach will be upset again.
tea if you prefer to drink should not be too sweet. only tea spoon in the cup is enough. too many ingredients will again give you an upset stomach.
if you get an upset stomach some how, its better to drink a glass of water with a pinch of soda added to the water, as this will clear your stomach from the acidity that you may be facing from days and you no longer will have to feel upset stomach.