Can you catch posin oak from touching something that someone else has touched?

Yes, you can catch poison oak by touching something that someone else has touched if that item has come into contact with the plant's oil, called urushiol. This oil can linger on clothing, tools, or other surfaces for a long time. However, simply touching the surface of an object that hasn't been in contact with the oil won't transfer the rash. It's important to wash any contaminated items and your skin to prevent the spread.