Bad breathe= colon/liver congestion. The colon and liver work in unison so flush both of those out. As far as contagious infections.... Viruses like hep c can cause bad breathe... Candida can be sexually transmitted, and that can cause bad breathe.
Maybe you picked up a parasite in china and the parasite caused a fungal infection that your spreading around. I would do all cleanses like heavy metals, parasites, liver/colon flush and see how you feel.
Don't kill yourself either there are people who are in far worse health on curezone who are so sick they can't even leave the house.
Best of luck.