The kanji and the word are exactly the same. That means they share meanings as well.
You learned this reading with the kanji, but here's an extra mnemonic just in case:
How do you read flatulence? Heh(へ)...heh..heh..heheheh. You can't NOT laugh at the word flatulence.
As with the kanji, some dictionaries incorrectly list おなら as a reading for this word, because the meaning is the same.
I'm assuming you are talking about flatulence, am I correct?
If I eat pork, I fart a lot.
Those farts were pretty satisfying.