The Correct spelling is: aerator
Common misspellings of the word aerator are:
How do you spell aerator?. It is not aeartor or aeator or aeraor or aeraotr or aerato or aeratr or aeratro or aertaor or aertor or arator or areator or earator or even erator for that matter!
One that aerates, as a machine for aerating turf or a device for aerating liquids.