Is it rude then....?

It depends on the context that the phart is released under, if it's a comment on the standard of play then that's perfectly acceptable unless you've been drinking Gillespies malt stout beforehand, in which case you're a disgusting reeking barsteward and should immediately throw yourself at the mercy of your host for producing such a vile, retch inducing, malodourous fug.

Hope this helps

It does Help

I'm not inviting him again

It wasn't so much the smell....more the bits that got stuck between one's teeth.

Nah, fart where you want.

lv

Darn and Mrs Darn are eating at a restaurant and a man farts. Darn says “How dare you fart in front of my wife”. The man says “Sorry, I didn’t realize it was her turn”.