LPG is an alternative fuel to coal and wood. It's known to be a clean energy, and emits zero carbon monoxide to the atmosphere. But, what happens if during your cook some, on the gas stove cooktop, black powder is produced as when wood or coal e.t.c is burnt? You then noticed your cooking utensils such as pots, pans, kettles and so on are all covered with soot?
When LPG gas starts to emit carbon monoxide into the atmosphere, it is no more a good source of clean energy. World leaders are concerned about the use of coal, which is which LPG gas was recommended to consumers around the world. The government has also pledge to reducing carbon monoxide emission that is sent out into the air.
Soot from the gas stove burner is mostly caused by uneven flames on the burner top. Uneven flames can be a result of rusty burner. This then cause flames not following a recipe pattern, not having the same quality in all parts. With some good parts and some bad parts. You will need to contact the gas repairman for replacement.
The older burner is then replaced with another one, that is newer and better. The soot is caused when a burner is worn out due to moisture or atmospheric agents. A replacement is the best option, unless you love doing house chores alot. Soot can be messy at times.