Sodium carbonates in food

I m allergic to sodium sesquicarbonate we used it as washing powder and it gave me breathing issues. I bought some biscuits the other day but they say they have sodium carbonates in it (plural) so I m just wondering if this is sodium sesquicarbonate in the biscuits? I know sodium carbonate and sodium bicarbonate make sodium sesquicarbonate but don’t know if the actual ingredient is in them if you get me?