Would you have shaken hands with this septic tank cleaner?

A guy came around our neighborhood handing out business cards for this company. He had on dirty clothes and his truck looked liked a rolling septic tank. Flies surrounded it. His face was dirty and his shoes were a dark brown color. We do not have a septic tank, so his services were not needed. He reached out his hand to give me a handshake. Instead, I said, “no thanks, just give me the card”. He left and I could not wash my hands enough. I burned his card. Question: did I over react to this situation or would you have done the same?