The decomposition products of ammonium bicarbonate are carbon dioxide and ammonia, which are human metabolites. Proper intake is harmless to human health. The US Food and Drug Administration (1985) listed ammonium bicarbonate as a recognized safe substance.
Ammonium bicarbonate can be used as an additive for some foods, which is relatively safe, and the decomposition of this substance is gas without residue. There is no potential pollution.