"How to tell if your drink has been spiked or tampered with?" A graphic posted on Facebook and shared over 38,000 times says to look out for "excessive bubbling" and sinking ice. The drink could also change colour or become foggy, it says.
"Drink spiking is when someone has added something, for example, alcohol or drugs, to your drink, without you knowing," according to an information sheet by the UK's National Health Service, or NHS.
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