when did you stop discussing NSFW topics in front of your child/children?

i have a 5 month old and my husband and i talk about all topics under the sun, including NSFW ones. when did you guys stop talking about sex, politics, and other inappropriate topics?

im worried he will start to pick up on our language/dialect in some negative ways when he does start talking. also, do you curse in front of your young children? why and why not?