Re: stinky pee
The older my boys get the stronger their pee is. After they start solids the pee and poop starts to smell. BUT, if the pee smell starts as soon as the first pee happens then it is build up. (Or if the strong pee smell happens after the diaper is really wet it may just be smelly pee)
You are washing right. But I'd strip them if the strong smell happens with the first pee.
What I like to do is add some baking soda to the Hot wash (with only a teaspoon of detergent) and some vinegar to the second rinse. But Then I do a second Hot wash and cold rinse with nothing at all. That should do it....