I'm using bellamy rice cereal also. Yes it got a funny smell,
but I mix it with fomula milk so taste better n smell better too.
I didn't stArt my girl one tAblespoon for start, I gVe her 5 scoop (fomula milk scoop) n 3 oz of milk.. So fAr she finish it..
Not sure how long cAn last after opening..