Help!! me with this Drive

I have this pendrive and urgently need to clean it, any suggestions on how do make it clean it without damaging it. I don't know what exactly is on it, but feels like some glue and rust. Also it might not be clear in the picture but there is glue on the inside of this pendrive.

I thought about using WD 40 and hair spray but it may get damaged because WD40 turn to a lubricant, and can damage my laptop's usb ports.

Share any good solutions.