How to remove bad smell from kitchen?
Bad smells don't suddenly appear: they have a source. The way to get rid of it is removing the source. If there is a persistent bad smell, I would recommend going though the kitchen from top to bottom and clean everything. This will probably take several hours to most of a day, depending on how many people help and how big the kitchen is.

This includes cleaning in drawers (removing inserts and cleaning them as well) and cupboards, pulling out appliances like the stove and refrigerator (maybe a piece of some food fell behind the stove while cooking and is spreading a bad smell?) and potentially even having a plumber check that there's nothing wrong with the sink / waste disposal. You should also change or clean the filters in the exhaust fan. Hopefully after this the source of the smell will be discovered and removed.

Once the bad smell is gone, you can maintain the kitchen by cleaning daily as you have been doing and making sure you get fresh air into the room. Leave the door open and have a window open in some other room to help get fresh air into the kitchen.