...since dollar for dollar, CO2 from a canister or cartridge is more efficient and less expensive, dry ice is only second best. Either way, vinegar & baking soda would be expensive & inefficient, not to mention messy and stinky.
But Lucien was asking about odor control, not how to put his rats down or a science fair demonstration. I just asked him why there was vinegar in his rat tub in the first place. He said "...so I'm trying to find stuff to combine with the vinegar that would help with the smell..." I can't tell if he is adding vinegar in a bizarre attempt to control odor (phew!) or thinks that vinegar is the principal "stinky" ingredient in rat urine, instead of ammonia.