My Dad used to take me to all the different stands around Maine Road when I was a kid, the obscenities never even crossed his mind, he used to be one of the people shouting them (he did say “OI!” to me when I joined in with “the referees a wanker” once though).
I think we only ever sat in the Family Stand once, for a night match, and Neil Lennon and Gerry Creany (who were in the Youth team at the time) came and sat close by and gave me sweets… I preferred the smell of cigars and beer and all the swearing in the Kippax though, even as a 6 year old.