Some people have no symptoms when afflicted with tonsil stones. Those who do have symptoms often report redness or irritation of the tonsils. There are several other symptoms that can be related to tonsil stones, with bad breath being one of the most obvious. According to the Mayo Clinic, bacteria grow on the stones, which produces a foul odor.
People with throat stones can also feel like they have something stuck in their throats, according to Dr. Erich P. Voigt, an associate professor of otolaryngology at NYU-Langone Medical Center. Other symptoms can include chronic, mild sore throat and reoccurring tonsillitis.