Why a yellow flame is called a safety flame if it could burn u seriously

Yellow bunsen flames are called 'safety flames' because, unlike the roaring blue flame achieved when the air-hole is fully open, they can easily be seen and avoided - this decreases the chance of loose hair/clothing catching fire, which means that you are safer overall. 'Blue flames', however, can be difficult to see even close up.

It dont even matter because at the end of thre day we gone life like it ius s

Less stable  hope this