There is a wide range of antibiotics used for different complaints that affect different parts of the body. It may well depend on the type and use of the antibiotic. Antibiotics such as norfloxacin or ciproxin don't seem to have an effect on my taste buds.
I would think that the reason for the antibiotics might cause you some issues with smell and taste. Yes, I have noticed some changes in my taste and smells when on meds but then again, I notice my perceptions are different when I have post nasal drip from allergies.