Now we are giving LO more formula we have gone from using the ready made stuff to the powder that comes in a big tub. I think I must be doing something wrong in preparing it because it smells and tastes funny and not like the other stuff. I've tried leaving the boiled water in the kettle for 30mins, then putting in the bottle and mixing and also pouring the boiled water straight into the bottle and leaving it there for 30mins before mixing and both ways smell weird.

Help!