My kids are a little older and I am sure that they have heard it all somewhere. I don't use the F bomb but I swear in front of them, you can't sensor anything that you do!
One night a couple of weeks after a break-in into our house, we had set the newly installed alarm. My husband felt hot and decided to open the window. Well, the alarm sounded.... scaring the crap out of him, that it stubbed his toe on the bed frame.