Gurgling sounds made by draining sinks are the result of air trapped in the pipes.
Usually, the presence of air in the pipes signifies the need for putting a vent in the pipe.
Sometimes garbage disposals are clogged up with debris or sediment and pipes have air trapped behind the blockages.
Whether the gurgling noises are due to your garbage disposal or other pipes, it is important to have a professional plumber come and determine the source of the problem.
If a vent is needed, a professional plumber will handle the project correctly, installing the vent in the proper location.