Do seven year olds have BO?

Elizabeth • Social worker * mom to Samantha * wife * baby girl #2 8-18-18*

So this is a weird question, but i want to know if I’m completely crazy. My ex-husband (daughters dad) insists that my seven year old has body odor and needs to shower every single day and use deodorant. I argue that kids develop BO as they start entering puberty. I have never noticed that she stinks. She’s only 7. So is my ex an idiot or is he right?