My son is pretty chill about most things but our blender, vacuum and lawn mower or anything that makes that sort of motorized sound scares him. Not sure why. If he is asleep nothing bothers him and many other sounds and things are fine with him but if he even sees the vacuum he loses it. He comes to my feet crying. For some reason when we are walking in the stroller if he sees mower he doesn't care. What scares your toddler?