My husband shouts at me infront of our 2yr old..

i ever had one very loud argument with my husband infront of my baby when he was young and now he really hates loud sound. He would get scared, cover his ears and cry. If my husband and i are in a serious topic where we raise our voice a little, he would start to do funny things or speak loudly to get our attention. Its sort of a defense mechanism that kicks in. Not sure if your kid would, but i see mine.

yes unfortunately he will. he will internalize it even though he won’t know how to express it. it’ll cause him stress that he cannot process