The Swedes have an answer to Norwegian lutefisk.
It's the Swedish traditional dish of 'surstromming',
or fermented Baltic herring.
It has now been added to the list of dangerous weapons
such as shoe bombs, firearms, knives, and lutefisk
that are forbidden on airlines.
Swedish fermented herring dish considered safety risk on airlines

Lutefisk has been added to the list of prohibited substances
by the Dept. of Homeland Security.
The FBI branch office in Minneapolis has been alerted
to watch for signs of lutefisk production in that region.
And the Centers for Disease Control in Atlanta warned
that any substance stored in lye
should be regarded as extremely dangerous.

Cheers, S. in Seattle