D.J.
Watch for pneumonia...my son had a recurring fever and when diagnosed, my ped said the fever was an indication. He had just gotten over a cold, but seemed to be recovering nicely. I agree with another poste...back off the meds unless he's really uncomfortable. Let the body do it's job...unless of course it gets dangerously high. Let him get rest, lots of fluids. I also agree, the infection could be causing the bad breath. Does anything hurt?