Does anybody know how to have fizz put back ina a opened drink of soda after the soda lost the fizz?

p.s. I am talking about a non canned soda that was poured in a glass and got put in the refrigerator then lost the fizz after being put in the fridge.|||The fizz in soda is due to the CO2 that is added to it when bottling so in order to get it back, you'll need to force CO2 into your drink. The only thing you can do at this point to revive your soda is to add fresh seltzer to it, which will give it the fizz but dilute the taste a little.|||Alkaselser|||Dry ice. Careful though. It can cause the bottle to explode.