Is yellow smoke toxic?

If the smoke column emitted by the chimney is yellow, the flue gas contains a large amount of sulfide, indicating that the boiler's desulfurization equipment is not put into use. In the production process, chemical plants produce many flammable and explosive gases, many of which are harmful to humans.

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What is grey smoke from exhaust?

Blue/gray exhaust smoke means there's likely an oil leak and your engine is burning oil. Time to have a qualified technician check things out. The leak could be caused by several issues like leaking valve seals, damaged piston rings, or worn cylinder walls. In respect to this, what does white smoke mean on a diesel? fuel White exhaust smok. If your exhaust smoke is white, this is a reason for concern in a diesel engine vehicle. White exhaust smoke means fuel is not burning properly. The engine is too cold.

Regarding this, what does red smoke mean in war?

They mean whatever the commander wants them to mean at any given time. Red smoke could mean fire on this location or it could mean DO NOT fire on this location. It could mean avoid this location or it could mean rally on this location. Consequently, what do different color smoke grenades mean? White = Used for conealment (No marking use) Green = Friendly Forces. Blue = Friendly Forces and/or LZ. Purple = LZ/Medevac LZ. Red = Hostile Target.

What color is toxic smoke?

Black smoke looks the most toxic of all smoke colors but is it? What should you do about this kind of smoke? Black smoke is a result of the burning of heavy fuels or synthetic materials. This can mean that the fumes are particularly toxic and shouldn't be inhaled if you are exposed to them.