Paris leaders look at milk. Some milk is not good. It has a bad thing. This makes babies sick.
Babies get bad tummy pain. They throw up food. The bad thing is not killed by heat.
The bad thing may come from oil. This oil helps babies grow. A company in China makes this oil.
Some big milk companies are in the study. Many parents say babies throw up. This starts the study.
Milk is not sold now. This is to keep babies safe. Families are worried.
Other countries help too. They look for the bad thing. China also tests milk. This stops problems.