See, mine don't drink much milk, they are 5 and 2, and as babies they didn't have much hair. they can eat now without getting it in their hair and they get a warm flanneling after every meal (head and hands and arms!). They don't sweat much, and neither do I, because I keep a cool house (for the eczema and asthma) and their beds get changed twice weekly, and usually their clothes get changed every day if not more.
I can see how a child would smell after 2 days if he/she was getting food in their hair or sweating a lot, or spilling milk, or if they were in dirty clothes or a dirty bed, but I honestly don't think the parents of your mindee were doing what I do.
I also find my children need to be bathed more in the summer when they are playing outside in the dust and mud.