Huel Black Edition Chocolate 500ml x 8

I have tried the product before as an addition to my week, to eat more, it is usually a nice flavour. I decided to order a pack but I opened one and it smelled like vomit, I was confused and took a sip anyway. It tasted horrible, I haven’t opened all of them but I’ve opened 3 and they’re all like that. It’s put me off these for a while as I’m scared I will buy one that’s off. They’re still in date but maybe a bad batch, I’m unsure what’s wrong with them.