http://www.nationmaster.com/encyclopedia/Cold-fusion
has a reasonably balanced discussion. There is quite a bit of evidence of suppression using the same tactics as the promulgators of “global warming” use to suppress countering views....denial of funding, denial of tenure, accusations of fraud (both public and in academic “witch hunts”), loss of career, termination (if possible)
Teenagers have accomplished fusion with deuterium gas plasmas. There is no suppression of the results. The difference is they aren't trying to scam people by saying it produces more energy than it consumes.