The Gas We Pass: The Story of Farts (おなら Onara) is a children's book written by Shinta Chō (長新太). It was first published in Japan in 1978; the first American edition was in 1994. The book tells children about flatulence (also known as farting), and that it is completely natural to do so. The book also discusses animals and their habits of flatulence. The book explains why farts smell bad, and what animals only seem to fart (skunks and stink bugs). The book is part of the My Body Science Set series of books.