Antibiotic is the cause of this problem. Better, buy probiotics and take them in high dose. THe anaerobic bacterias belong to the bad bacteria family. THe Antibiotic kills good and bad bacterias, but the probiotics just destroy the bad ones. Anaerobic bacteria are the cause of halitosis and Body Odor . If anyone dedides to take Antibiotics , you should take a loooot of probiotics right after the Antibiotic treatment , because the problem can return even with more strenght. I just want to help. It is not my intention to hurt anyone's feeling or making to loose hope...