I can't taste or smell all of a sudden?

See your doctor ASAP. This is one of those problems where a visit to your doctor is necessary to figure out what's going on. Only after a thorough evaluation, including examination and possibly labs and other tests, can your doctor correctly diagnose you and treat you effectively.
See MD. Acute loss of smell & taste can arise from many different causes from neurological to allergies. Seek an evaluation by your md to determine what your loss of taste and smell is due to.