AITA for telling my wife to not eat chocolate before bed so I don’t have to smell her farts? My wife is lactose intolerant.

Your digestive system can reveal a lot about your overall health, and getting to know how it works could make all the difference in how you feel day-to-day.

Welcome to Ask Doctor Zac, a weekly column from news.com.au. This week, Dr Zac Turner explores the smelly truth about farts.