The answer to 'drain trap making noise' is that a noisy drain trap is usually caused by a buildup of debris or water flow issues. This can create a gurgling or bubbling sound coming from the drain. Common causes include a clogged drain, low water level in the trap, or a vent pipe blockage.
If the noise is mild and intermittent, you may be able to fix it yourself by clearing the drain or adjusting the water level in the trap. However, if the noise is persistent or you notice other signs of a plumbing problem like slow draining or leaks, it's best to call a professional plumber to diagnose and repair the issue.