This article by MSM headline claims that air fryers cause cancer. However, this is greatly misleading and clickbait. If you look deeper into the article and others about the same subject, like this one from Poison Control, it claims that, “Air-frying equipment is not known to cause cancer”. What causes cancer is the process of air frying certain which can cause a certain chemical, “Acrylamide” to form. This is formed when food is heated to a temperature above 250 degrees Fahrenheit. This mostly forms in materials that are high in carbs, like french fries, potatoes, and baked goods. However, this can be formed in meat and vegetables, but the levels of acrylamide are very small.
The MSM site also claims some facts which seem to be true, but weren't mentioned in the poison control site, that air fryers are coated in something, and when heated, they can release toxic fumes. This is a toxic fume. Although most air fryers do have this, according to Fritaire, Teflon is used in many other cooking products, and it’s safe at low cooking temperatures. This article from Cnet claims that Teflon melts when the temperature goes above 500 degrees Fahrenheit. Most air fryers, like my Instant Vortex Plus, have a temperature limit. So, although most air fryers do contain Teflon, which can be burned. It is extremely hard, and nothing to worry about.