Toasters can be havens of pollution if you don’t maintain them well. Whenever you turn it on, it could be releasing harmful particles into the air that will have adverse effects on the body when inhaled. A sure sign that this is happening is when you see smoke whenever you’re toasting. When food particles are left in them, they become a source of air pollution as they produce smoke whenever the toaster is turned on. You would, therefore, do well to clean your toaster as often as you use it, being careful to remove dried up the oils and crumbs that tend to collect at the bottom or get stuck on the element. It is also advisable not to burn toast too heavily as research has shown that this leads to the production of high levels of acrylamide, a cancer-causing toxin. Toasting the bread just enough to make it a crispy light brown will help reduce your exposure to that deadly disease. The dodgy labeling on some toasters can make it difficult to know how to get the right level of burn on your bread, though.