Why does my hottest gas stove burner cause a bad smell? Flames high, top of flame is white.?

Question

We've been wondering why one burner on our gas stove causes a bad, like burning rubber or plastic smell. Appliance guy said it was our pots, but we've tried it with clean-bottomed pots. We notice that the flame is white as well as blue and that it leaves a deposit on the pot. Months ago, we had another appliance guy fix the oven, and he told us that the flame was not high enough to this one burner (it's supposed to have a bigger flame than the others) and he said he would increase the gas flow.

I scrubbed all pot bottoms, but it still smells bad.

Is it possible that there could be some impurities in the gas itself to that burner?

Or that the old/rusty grate or that round black thing atop the silver thing the flames come out of get in contact with the high flame and create this?

We smelled it strongly on a pot with a greasy burned on patch, but also smelled it after I cleaned that pot and smelled it on totally clean pots as well.

The flames on the other burner burn only blue.

Answer 1

Rangefinder is right.

Answer 2

The burner is starved for air.

Thus the lazy partially burned gas.

A good gas flame needs to be properly premixed with air before it becomes a good hard blue flame.

turn your gas off, inspect the burner and the jet port and air shutter of the venturi section of the burner.

the ports need to be opened and you need to make sure a spider or grease or food or something hasn't gotten into your primary air section of the burner.