My Waste Smells Like Cabbage Even Though I Haven't Had

My waste smells like cabbage even though I haven't had any to eat. In addition, I don't eat cruciferous veggies. I did read that when amino acids tyrosine and phenylalanine are not broken down, that a cabbage smell can result. Not sure which course of action to take: do I take amino acids or should I avoid foods high in the two amino acids mentioned in this post.