Help! Frozen EBM has funny smell and white bits - mould?

[Sticki]

I have about 30 glass bottles of EBM in the freezer. Ive just stopped b/feeding and was wanting to give DS 1 feed per day until I run out. The oldest bottle is 4 months old and the bottles are special glass baby milk bottles from the hospital and were clean and sterilised.

The white bits are at the bottom of the bottle (and not the 'cream' on to the top of the milk). They dont dissolve when the milk is warmed.

I have thrown out the last 2 bottles defrosted. I dont want to risk it, especially as DS was a prem and has been ill pretty much all winter.

EBM doesnt smell does it?

Any ideas before I throw the lot out.

The funny smell is usually caused by lipase - this makes it smell odd and taste slightly soapy. But is totally fine.

The white layer is probably just fat binding slightly to the glass - you certainly see it in other mammalian milk (didn't freeze my ebm in glass bottles, so no human milk experience)

taste it?

How were the bottles frozen? I find that if I freeze milk with the bottles upright I can get the creamy stuff at any point in the bottle. If it's at the bottom I have to warm the bottle quite a bit to get the cream to melt into the milk and also swish the milk around gently.