It's very unlikely to get worms inside your body from eating boogers because you'd have to have those worms on your finger or in your boogers to get the worms inside your body.
Worms don't just grow inside your body as they have to come into your body from the outside.
Eating boogers is actually an immune system booster however it's really not a good idea to allow kids to eat their boogers or for adults or anyone else to eat their boogers.
You can get some other bad bacteria though in your body which could actually make you sick if you do eat your boogers so it really should not be done.
Although eating boogers can boost your bodies immune system it can make you sick in other ways so eating boogers is not really good for you.
I used to eat my boogers as a kid and now it grosses me out to think about that.
The way I stopped was my dad told me that worms would grow in my stomach which also grossed me out enough to cause myself to stop eating my boogers.
Although I asked a doctor later about that and he said that worms would not actually grow in your stomach from eating boogers however it's not really healthy either and could make you sick in other ways.