Sirenebuster / medicine

Sirenebuster is a multi-function device.
1. As the filter of a straw, it tags a drink that has been owned.
2. As a detector, it has a container to hold a test strip that identifies if the Flunitrazepam exists in a drink.
3. As a whistle, the victim calls for help in an emergency where the victim is threatened to drink the poisoned drink.
With the help of such device, users (especially the female) can enjoy any party with no fear of having a Flunitrazepam-poisoned drink.