You pick up tricks. Mainly farting while walking. If you get your foot placement and pivot properly you can send it out without much “pushing”. I don’t tend to try and push my farts, as I am old and I don’t trust them all.
You might be over thinking it. Everyone farts, but it’s seen as more acceptable to fart away from other people’s noses. You don’t really wanna smell someone else’s gas, do you?