Tu Quoque fallacy

 This fallacy occurs when someone dismisses another person’s argument by focusing on something personal about them instead of addressing the actual point they are making. For example, imagine someone who has smoked for many years tells someone else that smoking is bad for their health and they shouldn’t do it. The person being told not to smoke might respond by saying, “Yeah, well, you smoke, so why should I listen to you?” In this case, they are not responding to the actual argument about the harms of smoking. Instead, they are attacking the person who made the argument, pointing out their smoking habit as if it makes their advice less valid.

By doing this, the person avoids the real issue and shifts the focus to the other person’s behavior. This type of argument doesn't actually address whether smoking is harmful or whether the advice given is good; it just tries to discredit the speaker based on their actions. It's a way to distract from the main point by turning the argument into a personal attack.