I Usually Dont Have Bad Smells On Me. But Lately

I usually dont have bad smells on me. But lately since i moved I've been having the onion smell to my sweat and body oder. I noticed it on the bus. I kept smelling onions and since thats not my normal body oder i was like gross, but then realized it was me and its still happening two week later. Why? Is it just an age thing? Am i sick? Could it be stress?