Purity Baby Porridge got a Metalic taste and smell.

Both my children 7months and 18months loves the Fruity Custard flavoured baby porriged. The last batch I bought I really got dissapointed. I opened the one box to smell a funny smell. I threw it away as as always you will get something that is not right and not worth your time and effort to complain about. I finished the Cerelac porridge instead and after a week opened another box of purity again. Fed my 7 month old and he ate. When I started feeding my 18 month old he took a bite and refused to continue eating making gagging sounds. As it is a age that he decides to be a hand full I took a s**** full to show him I'm eating aswell. I couldnt even swallow. It was the worst taste ever. It left a very strong metalic taste in my mouth. I smelled the porridge and it's got this very weird metalic smell aswell with a smell of old oil or something combined. The porridge in colour is a bit darker aswell as what I'm used to. Bought 4 boxes 2 big and the other ones small as Dischem did not have more big boxes. Total dissapointment as I wont be feeding them that again. All the boxes are with in expiry date. What a waste of money.