Anything that can burn is a combustible substance.
Burning in common language is the oxidation of a substance. Many materials may burn - carbon, sulphur, phosphorous, silicon, iron, and so on.
A substance's ability to burn is called its flammability. It refers to how easily a material catches fire and sustains combustion. Factors that influence flammability include the presence of flammable gases, liquids, or solids in the substance.
They burn up.
The flammability of a substance refers to whether or not it will burn. It is a measure of how easily a material will ignite and sustain combustion in the presence of a flame or spark.
its odor is how it smells
vanilla
It smells nice.
It's sulfur. It is yellow in color.
"to make angry" and "a substance to burn" is incense.
I do - smells lovely!
because it is a yellow(ish) substance.
The element you are describing is sulfur. It is a yellow solid at room temperature and has a gas form that gives off a distinctive odor reminiscent of rotten eggs.
accumalation of a yellow watery substance in the scrotum
the yellow substance is callled bile. which is just stomach acid.
A banana is yellow and has a distinctive smell resembling its fruit.
Yellow paint, because colors are not defined by their smell.