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Smells like lung damage...

Diacetyl, a flavoring known for its use in microwave popcorn, is also commonly used in vape liquids.

What is Popcorn Lung?

Popcorn lung gets its name from a chemical called diacetyl, which was once commonly used to give food products, such as popcorn, a rich, buttery flavor. In fact, the condition was first identified among popcorn factory workers who inhaled the chemical in the workplace. Breathing in harmful chemicals, particles, or toxins can lead to popcorn lung. Food-flavoring fumes produced during the manufacture of candies, potato chips, popcorn, and dairy products, are major culprits. (source)

What are the symptoms of Popcorn Lung?

Symptoms include:

  • wheezing that is not related to another health condition, such as bronchitis or asthma
  • dry cough
  • shortness of breath or difficulty breathing deeply, especially with physical activity
  • unexplained exhaustion
  • rapid breathing
  • persistent skin, eye, mouth, or nose irritation if caused by a chemical


Why do vape manufacturers use Diacetyl?

For the same reason that corporations use a whole range of chemicals in our foods: it’s cheap.

But my manufacturer says they have stopped using Diacetyl...

Some manufacturers, under public pressure, now claim that they are phasing out or have stopped using Diacetyl.

In its place, however, manufacturers are using a host of new chemical flavoring agents with their own associated risks. In fact, the latest research found that all nine common vape liquid flavors were dangerous to cells in the laboratory at the highest levels tested and all the flavorings impaired nitric oxide production in endothelial cells. (source)