Good morning parents. My son is just 6 months old but sometime his breath is smelly. I clean his mouth with a small soft cotton cloth. Is it normal to have bad smell?

no its not normal po especially for baby as young as 6mos, my son also has that but not too smelly because he has lactose intolerance and often have upset stomach. The smell is not coming from his mouth but rather from his stomach. Check with your pedia.