So, I have always viewed this as more distasteful than comedy and so while its no big deal in an established relationship it's not something I do all the while.
We have fart contests. Not intentionally, but it always ends that way No reason to destroy your bladder just so someone won't see you're a normally, properly functioning human.
And if you're not prepared/comfortable enough to fart around your own partner you need to split because I'm sure it's an indication of underlying insecurities that will destroy the relationship anyway.