If you use unsuitable oils, they might degrade, produce smoke, or even turn toxic when subjected to high heat. Hence, the significance of high-temperature cooking oils cannot be overstated.
It also causes the oil to taste rancid and can ruin your meal. Some cooking oils are better to use when cooking with high heat — such as searing or frying. These can withstand higher temperatures ...
Whenever you fry up with such a selection, you won't need to worry about exceeding their smoke point which, as Wang points out, is what makes these oils "suitable for high-temperature frying." ...
and if cooking at a high heat, use oils with a higher smoke point." For home cooks curious of the best examples, Cochrane said "avocado, peanut and canola oil all have high smoke points." ...