That's going to be variable dependent upon whether or not the milk is inoculated with mold spores and the storage temperature.
The only milk product I have every had go moldy was some cream that was probably a month or more past its expected shelf life.
Most cheeses don't mold fast at all!
Fast
no
YES!
milk and mold
Because milk has lactose which is a type of sugar. It also adds moisture. Both sugar and moisture are needed for mold to grow.
bread mold in about 10/15 days it deepens what type of bread it is
This depends on the type of cheese that you want to mold, although cheese is already mold, and with some French cheeses, you can really tell.
The other foods cant be exposed to air in order for it to mold. the milk can.
Why on earth would anyone want to water grass with milk?
well you can mold it under a heat lamp but you might toast your bread so be careful on heat
Baking might kill the mold, but you would still taste it in the finished product. If you have to make the recipe, use water and 1 teaspoon of oil for the milk. That's for most recipes, some have to be milk.