tester

"The wires were live. I had a tester, so I realised. I'd be dead if not."

If testers find something potentially dangerous - stronger than usual, contaminated, or sold as something it's not - they'll put a warning out to clubbers.

Pictures from last year's Halloween event showed people dressing up as a giant surveillance camera, Covid testers, and a censored Weibo post.

"You don't think of it being in a perfume tester bottle. We didn't know what we were looking for."

“Everything from kids mixing skincare and makeup testers together to make ‘smoothies’ to opening new makeup packages and using them.”