Q: I have white smoke from my exhaust, its also leaking from the engine bay.

A malfunctioning EGR system may cause excessive raw fuel emissions, that is an odor of gasoline, but not smoke (white or otherwise) from the exhaust. Some smoke at start up can be normal, particularly white smoke from condensation. However, continuous smoking (of any color) after the first few minutes signifies a problem with the engine that you should seek to have identified in an engine smoking diagnostic. If the smoke is white that could be from an antifreeze leak due to a cracked cylinder head or engine block or a head gasket failure (the latter appears to have been ruled out in your case). If the smoke were blue, that would signify an oil leak into the combustion chambers from the valve guides or the rings. Black smoke occurs if the engine is being flooded with gasoline. Of course, multiple engine faults could occur at the same time causing different appearance of the smoke. At any rate, the thing to do to resolve this is seek a diagnostic so that you can determine what repairs will be required. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.