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.
You don’t need to voice out your sensitivity to certain situations when you can just remove yourself from it. OP’s coworker is a bitch.
I can understand not wanting to hear a constant barrage of swear words, but getting triggered at someone’s outburst of frustration expressed as a swearword is lame shit.