A multi-day run of Phish concerts in Wisconsin attracted people from all across the United States, and some were busted for distributing nitrous oxide to fans. Wisconsin Police Bust Several Phish Fans In Possession Of Nitrous Oxide TanksI remember going to my first Grateful Dead show. Apparently, some people survive on the road by selling balloons filled with nitrous oxide. Get our free mobile appThe Phish fans are pretty similar to the Dead fans. The officers made a handful of arrests and confiscated 10 nitrous tanks and hundreds of unused balloons.