Zero Water smells, Internet

I bought a Zero Water Pitcher about 3 weeks ago. At first we just loved it the water was fresh tasting, at the end of the third week I poured a glass of water and took a drink and almost vomited it had a terrible smell!!! like dead fish!!,I immediatly tested the water it was at 131 which is below our tap water. After I took the test I looked online for complaints on Zero water and found other people had the same problem and they were from different parts of the country so it can't be from the minerals etc. in the water because different regions have different mineral contents.  I think it is built into the filters,