I hope I understood you correctly:

1) You are not suggesting to make a serious threat to the airport, but a funny thing (like you suggested with the fridge that is running).....

That would be a waste of your/the call agnets/our time.....

2) If you should have meant that someone does a fake call with a serious threat, then
-a) he/she/it should get a doctors exam about their mental capabilities
-b) shoot yourself in the head before others might do that

They had a 'famous' incident at DUSSELDORF Airport a while ago, where a muslim woman didn't want to travel with her soon-to-be-husband because she was afraid. Well, nothing to be afraid of for her, she is sitting in jail and the airport as well as the airlines sued her for millions of € because DUSSELDORF was evacuated, the full program on anti-terrorist-activity started and it was a big mess. By the way, because of this idiot I was not able to travel.... Lucky her she was caught by the authorities before I could get a hold of her, because 2)-b) would have come into effect!

So, as mentioned above, I hope you meant 1), everything else is unacceptable