Why does rake yohn hate mustard?

Answer 1

Rake Yohn hates mustard because as a chemist, he is aware of the fact that the more you grind mustard seeds, it releases a gas that can be synthesised into a chemical weapon.

Mustard gas has extremely powerful vesicant effects on its victims. In addition, it is strongly carcinogenic, due to its alkylating properties.. Because people exposed to mustard gas rarely suffer immediate symptoms, and mustard-contaminated areas may appear completely normal, victims can unknowingly receive high dosages. However, within 24 hours of exposure to mustard agent, victims experience intense itching and skin irritation, which gradually turns into large blisters filled with yellow fluid wherever the mustard agent contacted the skin.

Also, because it's gross!