It sounds like when you are stressed or your body is working harder than usual, you detox more, that sounds normal. Smells can be from detoxing and detoxing can come from anything in your body which is bad or rotten. I don't know what the reason for the smell is, but you might have bad indigestion, a blocked colon, a parasite/s, or maybe just being young, you are sweating alot? Where exactly is the smell coming from? Is it all over or just armpits or is it breath from your mouth? Is your faeces very smelly?
I would definately visit the cleansing boards, including bowel cleans, parasite support and humaworm to begin with here at curezone. Whatever is ailing you, though, you must increase your water. You must drink alot of water and make sure you are hydrated at all times.