Do you mean to say that a strange character in one word keeps you from tokenizing the sentence? And hence you cannot make sense of the whole sentence because of

Do you mean to say that a strange character in one word keeps you from tokenizing the sentence? And hence you cannot make sense of the whole sentence because of that one character (syntax parsing → semantics)? Or do you simply mean that you don’t understand what that one single character is supposed to represent (or just sound like)?