Amonium bicarbonate (that may be wrong)is usually available at bakery supply co. Be careful when using.
We used to haze the rookies buy opening a 10# bucket and fake smelling, then asking the rookie to take a big wiff to see if it was alright. They usually hit the floor in a matter of seconds. This is such a cruel industry(proud to be a part of it)"talking 30yrs ago"