If you have a bad feeling about someone you just met, get away

You don't owe anyone an explanation for not wanting to talk. Don't feel pressured to be polite and stay and talk to someone that gives you a bad vibe, or someone who you don't want to know. Recently, I talked to someone who I thought was an okay person to talk to, but then they said some stuff that seemed like a red flag, and I got a bad vibe from them, and wanted to get out of there, but I didn't because I was trying to be polite. Less than 24 hours later, I found out that this person is known for doing stuff that I would consider to be extremely particularly heinous, and I am also now certain that this person intended to do that to me. So if you get a strange feeling from someone, trust it. It's always better to stay safe.