Add wood smoking chips to an iSi Gourmet Whip Plus. Set aside.
Combine the gin, Campari and vermouth into a mixing glass and stir. Add the gin mixture to the whipper. Charge with 1 NO2 iSi cream charger. Shake contents well to distribute gas throughout the product. Let sit overnight or 24 hours.
Release gas slowly. Remove head of whipper. Strain liquid into mixing glass. Fill glass with ice and stir to chill. Serve in a classic cocktail glass and garnish with orange peel.