Thanks again BaneBirst! Got this fixed. I did not understand to check Vespene Geyser unit. SOLVED.
One more noise problem still remains. Infested Command Center and maybe few other infested buildings are causing noise. Maybe that sound is somehow linked to Colony Infestation behavior? I will try to find solution for this. I just hate all ambience sounds :)
I found a solution to infested buildings by editing events of actor called "ZergColonyInfestationLoop".
Go to the unit 'Vespene Geyser' in Data and remove the top actor event in its list of actor events: 'UnitBirth.VespeneGeyser-Create SoundEmitter VespeneGeyser_Ambience'.
Go to the Data module and then open up Actors tab by hitting the small green plus sign and going to 'Edit Actor Data > Actors'.
Search for 'infested civilian'.
Select the actor 'Infested Civilian'.
On the right, double click the field for the section '(Basic) Event: Events - Send'. (The part on the right side of the division under 'Infested Civilian').
Scroll to near the bottom of the list that pops up and right click the flag that's labeled 'Actor Creation - Create InfestedCivilian_Moan' and select 'Remove Selection' (Note: Must right click the flag part, not the action part).
0.952146375791696
Thanks again BaneBirst! Got this fixed. I did not understand to check Vespene Geyser unit. SOLVED.
One more noise problem still remains. Infested Command Center and maybe few other infested buildings are causing noise. Maybe that sound is somehow linked to Colony Infestation behavior? I will try to find solution for this. I just hate all ambience sounds :)
I found a solution to infested buildings by editing events of actor called "ZergColonyInfestationLoop".