+1 to that. There are also foods that the mom can normally eat no problem, but the kid's either going to have allergies to, or more common just not be able to digest. For example, eat a lot of broccoli, and that is guaranteed farts. Farts by themselves aren't bad, but if it's keeping your baby's belly inflated and makes it hard to sleep, well there goes your sleep!

Little babies are fascinating. Have fun, explore, trust but verify. And lastly, your baby usually knows what's up, and you do too. Don't let the "common wisdom" to tell you otherwise.