How do yall control any vocal stims that might break character?

I tend to giggle as a vocal stim, kinda just a gap filler, but im trying to get a more solidified "stream voice" going for playing my vtuber character. And simply put I giggle a lot where giggling isn't really where I should be giggling, especially for trying to be a villain esq sorta character.

Any other neurospicy vtubers struggle with out of place vocal stims?