@ch3apshad3s We get clothes from friends that have this challenge. Cannot emphasize enough that laundry stripping baby clothes will only lead to ruining the baby clothes because it will make the colors run. Washing in super hot water will shrink the clothes. Baby clothes are not as resilient as adult clothing, in my experience.
What I have done that does work: separate lights and darks, then go to Costco, load up on vinegar, go to Home Depot and get a 5 gallon orange bucket, and then soak the clothes in half vinegar half water for a day or so. Then, if they still smell, mix a cup of borax in hot water until it dissolves, dump it over the clothes in the washer, and wash on a warm extra long cycle. Usually, that takes care of most of the smell.
If it doesn't totally get it out, at this point I move on. With a little time and a few washes it goes away.
Good luck!