To my understanding, “information” is a “mass noun”, like “air” or “water”. You don’t pluralize those. Instead, when you use a mass noun, you’re referring by default to the entity as a whole; to refer to some part of it, you apply a (possibly fuzzy) unit of measurement, like “cubic foot of air”, “all the air”, “some water”, or “too much water”. So just as you wouldn’t say “all the airs” or “some of the waters”, you normally wouldn’t say something like “lots of informations”. In other words: it looks odd because it’s incorrect usage, and your instincts are telling you so. :)