> Another ingredient you may be surprised at is urea。 Pig Urine This is the kind of stuff that kids get taught in school to try and shock them into not smoking

> Another ingredient you may be surprised at is urea。 Pig Urine This is the kind of stuff that kids get taught in school to try and shock them into not smoking. It's marginally correct at best. If that shocks you, then I hope you don't drink beer, because urea is commonly used in the brewing industry as a yeast nutrient.