I've been farting all day
Why do you think you're farting so much?
I have a serious problem with my farting, and they smell so bad.
It is so rude to fart in front of other people. You need to be more mindful and control yourself in front of others or nobody will want to be around you.
I just can't help it sometimes. I need medical help.
You might be right; it's rude to be farting all the time. If you really can't control your farting, you should check and see if there's some kind of medical or dietary problem.