Can taking antibiotics cause you to have body odor?

Potentially, yes: Depending on your body's reaction to antibiotics. For example, if the antibiotic kills off a certain population of bacteria that normally resides on or in your body, it can allow for other types of either good or bad bacteria to grow . This dominant new population of bacteria can then cause your stool to have a different odor, ad is experienced in patients with a clostridium difficult infection.