I was standing on a road and some random person came to me asking for some money because he lost his wallet. He looked very unhygienic. After the conversation, he gave me a normal handshake and a dab handshake. Now i am worried if he injected a needle into me when giving me a handshake. I didn't find any visible spot on my hands. Is it possible that he could prick me while handshaking and me not feel it?