Wouldn't have thought so, as I believe it is the carbon dioxide produced by the raising agent that makes things rise.
Another thing I came across was that SR flour (Which you used in CA's naan recipe, and basically is just plain flour that has baking powder and salt already added) can stop working if it is old.
'Self-raising flour will not keep for very long. The baking powder absorbs moisture from the air, which reacts with other ingredients in the flour, affecting its ability to rise.'
Martin