Prepare Smoker: Preheat smoker to 200 degrees (F).
Smoke: Place water in a large glass bowl or dish. Place on smoker for 2-3 hours until the color begins to change into a mild yellowish tint and you like the flavor (make sure to taste test at the 2 hour mark for flavor. You want a mild smoke influence. Remove.
Strain: Strain water using a fine mesh strainer and distribute into ice cube molds and freeze.
Video
Notes
Let the drink sit for 1-2 minutes to let some of that smoked ice begin to melt and integrate into your drink. Some will add a dash of club soda or water to an Old Fashioned, BUT it's not needed here because of that smoked ice. It will slowly melt and add incredible smoky flavor to your drink.