Coolant leak-'91 Accord

I have been noticing a small leak of coolant that looked like it might have been coming from the little radiator plug at the bottom of the radiator for the last couple of weeks. Today I drove my car to work and back, decided to go to pepboys and as soon as I stopped in the parking spot I started hearing a gooshing sound and white smoke started coming out from the left side of my hood and smelled like burnt coolant (All the coolant was leaking on my hot exhaust pipe, which is located right under where it was leaking. I imediately turn off my car and notice a big spot under my car from coolant, coolant was leaking from everywhere under the engine. It stopped leaking aster about 2 min. I can say that I am cetain that the leak is not from the bottom of the radiator or any of the hoses infront of the engine. I have realized that I believe that it is leaking from behind my engine possibly under my intake manifold. I also believe that there are some coolant hoses back there under the intake manifold and oil pressure sensor. That is the main area where I see coolant coming from. Another place that I saw was under the timing belt cover there was a drop of coolant. Hopefully I have described my problem well enough to understand what happenend. I appreciate all of your help. Thank you, Justin.