Shadowsmoke Dragon Pipe (Patreon)

Wondrous item, rare

This magical wooden pipe leaves behind odorless smoke that dissipates rapidly. The head of the pipe detaches, allowing you to refill it easily. The pipe has 4 charges and regains 1d3+1 expended charges each day at dusk. As an action, you can expend a charge to blow a small, condensed smoke ring at a friendly creature (including yourself) that you can see within 30 feet of you.

A creature affected by the smoke ring in this way can choose to immediately turn invisible or wear the smoke as if it were a physical ring. The ring lasts for 1 minute or until the creature uses a bonus action on one of its turns to turn invisible. A creature turned invisible by the smoke ring reappears at the start of its next turn or when they attack or cast a spell. A creature can only have 1 smoke ring at any time.

Huh. Smoking can save lives after all.