Your water pump possible went out so you might want to check the water pump and also check the timing belt
I would check the hoses leading into your radiator, and also the overflow for antifreeze. If that is not the problem, it could be your heater core. Your heater core might be leaking, you might have a hose leaking
Yes, antifreeze can leak from a water pump gasket.
Passenger side floor? Could be leaking heater core
It depends on if you see the antifreeze leaking or it is just disappearing. If it is just disappearing then a bad head gasket or cracked head may be the problem. The smoking could actually be vaporized antifreeze. If that is the case don't run it until you can get it fixed.
There are several reason why a car might lose antifreeze. The water pump might be bad, one of the radiator hoses could be leaking, the radiator could have a leak, a freeze plug could be leaking, or it could have a blown head gasket.
you might have a blown head gasket and the coolant is leaking into the cylender and the engine is burning it.
Could be the intake manifold gaskets are leaking.
Head gasket could be bad
Antifreeze could be running out often due to a leak. It is important to inspect the radiator for small cracks or smoke.
it could be a number of things ..running hot .. Thermos stat .. fans not working...leaking antifreeze etc...
The only way to find out is to have a look it could be anything.
rear freeze plugs