I started using spirulina from China a couple of years ago and my urine started smelling really weird but I didn't make the connection until I stopped the spirulina for a while. A couple of months ago I began taking chlorella and spirulina again(both from China) and that weird odor came back again. I stopped a couple of weeks ago to test and see if the sp. & chl. had anything to do with the smell. I had a glass of the spir. & chlo. in apple juice the other day. Same odor came back. So, has anyone else had this experience with those two green foods coming from China? I can have liquid chloraphyll and have no odor problem. So, I'm thinking perhaps it's the source of where the spirulina and chlorella is produced. The company where I buy it assures me they test the product but I don't know what they may be testing for.