My knowledge is very limited on this, but when I worked for OxyChem 20 years ago I attended a conference where the subject of cold fusion came up. At that time only one group of scientists (at a university) claimed to have produced cold fusion. Absolutely no proof of cold fusion ever taking place anywhere. Period.
However, if you want to invest a few dollars, my cousin is working in his garage on an absolute gangbuster formula to turn water into gasoline.