Toxic Smoke

Drop: Mecharantula [50]

Zone: Mechagon

Approximate Drop Rate: Unknown

Drop: Professor Putricide [??+]

Zone: Icecrown Citadel

Approximate Drop Rate: Unknown

Vendor: World Vendors

Cost: 50 (unlimited supply)

World Event: Feast of Winter Veil

Quest: You're a Mean One...(Alliance)/(Horde)

Approximate Drop Rate: 1 in 65 from [Stolen Present]

World Event: Feast of Winter Veil

Quest: You're a Mean One...(Alliance)/(Horde) [30]

Approximate Drop Rate: 1 in 65 dropped from [Stolen Present]

Pet Battle: [25] Zaralek Cavern

Quest: Bert's Bots [1]

Zone: Dun Morogh

Drop: Leprous Sack of Pet Supplies

Approximate Drop Rate: Unknown

Profession: Legion Herbalism

Zone: Antoran Wastes, Krokuun, Eredath

Quest: Report to the King [10] (Alliance), Warning the Warchief [10] (Horde)

Zone: Stormwind, Orgrimmar

Profession: Engineering [205]

Taught By: [Schematic: Lil' Smoky]

Profession: Battle for Azeroth Engineering [125]

Taught By: [Schematic: Mechantula]

Promotion: StarCraft II: Wings of Liberty Collector's Edition

Pet Battle: [25] Revendreth

Profession: Engineering [205]

Taught By: [Schematic: Pet Bombling]

Trading Card Game: March of the Legion

Vendor: Angelo Rustbin

Zone: Undermine

Contained In: [Sifted Pile of Scrap] 1 in ??

Cost: 333 (Renown 2) or 1 (Renown 14) (unlimited supply)

World Quest: Cutting Wind [70]

Zone: The Forbidden Reach

Promotion: Mountain Dew Promotion (Summer 2009)

Vendor: World Vendors

Cost: 50 (unlimited supply)

Pet Battle: [25] Revendreth