Pee+snow = yellow snow

[Walrus]

Is snow a reagent, like the kind of reagent we can stuff a fire extinguisher with and make snowballs?

Otherwise there's fake snow that can be made with polyacrylic acid. I figure it might make some kind of sense for a recipe that involves welding fluid given that at it's base is hydrocarbons. Basically add water and get nontoxic not actually snow that resembles snow.

Maybe if you put ice/very cold water into an extinguisher it sprays snow everywhere?