Schiphol airport in Amsterdam is one of the most badly designed I’ve ever seen. The security check is located right before each boarding gate. As a result, all the passengers for the flight arrive there at once and have to stand in a very long queue zigzagging between metal rails. Presumably, in the intervals between flights the security gate stands unused. This is instead of having a unified security check for all flights at the entrance of a big area, like in all the other airports, so the queues are small or none at all and the equipment utilization is uniform.
I had to stand in this security check queue for almost an hour, breathing into the neck of the person in front of me and feeling the coughs of the person behind, directed right at my head. Now I am down with a severe cold. It might be that the cold Amsterdam wind from the canals is to blame, but I suspect the person in the airport. Curse you, the Schiphol architect.