A video shot at the Columbus, Ohio Airport has gone viral showing the TSA testing drinks purchased inside the terminal for explosives.

The footage shows TSA agents walking around a departure lounge asking to test passenger's drinks for explosive residue with a swab they hold over liquid.

This is inside the terminal, well beyond the security check. These are drinks that were purchased inside the terminal.

Experts claim rules about checking liquids carried through security are pointless and unnecessary.