A ballast that smells burnt is going bad. The ballast will have to be replaced to fix the problem.
i believe it could because the nut has a certain type of protein in it that can counteract some burnt tastes. also, it is a very neutral base.
Dog food ;)
In culinary school we were taught that to get the burnt taste out of foods sometimes it works to use a peeled potato let it absorb the tastes for at least half an hour remove, or if it is a cream based soup add milk or cream to fix a little at a time until burnt taste is gone. From Grandma's kitchen what works every time is creamy peanut butter 1 tablespoon at a time up to 5 tbs per pot. just keep tasting it until burnt taste is gone. Trust me it won't taste burnt or like peanut butter.
Place it in a new pan and continue cooking. Add a pinch of sugar as you cook it and taste it. If necessary add more sugar but be careful not to over-sugar it. The sugar will counteract the burnt taste.
A burnt leaf.
Your face might get burnt if you have sensible skin or if the mayo has a trace of mustard. I do not recommend it since I had the same question, did it and went all wrong.
Power steering fluid smells burnt, sometimes I add fluid, cause its down
the oil is darkit smells burnt
Gold
Rubber
Marijuana, primarily. It could also be salvia, or several other "organic" drugs.