followed with ‘I wasn’t aware is so important to you. I didn’t want to insult you and if you felt so, I apologize. The word fuck is one I use very often, but I’ll try to control myself around you’
Note I didn’t insult the coworker (no fuck you or fuck off), but simply said ‘fuck’ out loud due to a job error.
My neighbor passed away and a new family moved in. Talking with dad, I noticed he didn’t swear much. I said a handful of curse words the first few times we talked. I noticed he was a little put off. So I just made a conscious effort to not curse around him. Never apologized, just tried not to. Pretty sure he’s noticed and appreciates it.