A. Nitrogen Peroxide
B. Ethyl Mercaptan
C. Carbon Monoxide
D. Sulphur Dioxide

Submitted by: Malik Asghar Hussain

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LPG gas is basically propane and butane, and it is odorless in its natural state. The smell that you notice when there is a leak is actually of an entirely different agent, called Ethyl Mercaptan. This substance is added to the gas when it leaves the main storage terminals

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