Argento has a talent for inserting subtle clues in his movies (maybe the best example being the initial scene in Deep Red).
In Suspiria he inserts at least two intriguing clues, by willingly subverting science, as a way to alert us to the presence of unearthly evil. Just a few seconds before the scene in which maggots fall from the ceiling, we see some water draining from a sink, and rotating clockwise. This contradicts the myth (if not the reality) of the fact that in the upper emisphere the Coriolis force would impose a counterclockwise rotation (...). It seems to me that the deliberate choice of rotation in the sink is not casual, but rather a clue that Argento is giving us that 'not all is well' in the school. A second clue comes towards the end of the movie, when we see water spurting from in a gutter, in an apparent violation of basic principles of pressure. Once again, this violation of physics occurs just a few seconds before the horror begins.
I am not a fan of this particular movie (though it is quite rich in atmosphere, and the use of color -from the very beginning- is intriguing), but I did found these subtle uses of science to be interesting.