A quiet room can still produce a noisy podcast recording. A microphone stand may carry desk movement directly into the microphone. Keyboard taps, a cable touching the stand and a moving chair can all become more obvious once the voice track is made louder.
Record the actions you actually use
Make a short test with four parts: speak normally, type a note, move the mouse and reach for water. Listen to the file through headphones. This is more useful than a test where everyone sits still and does nothing.
If typing is the main problem, move the keyboard farther from the microphone and use brief notes during answers. If a low thump appears when you touch the desk, inspect how the stand rests on it. A different stand position or a stable support may help more than an audio filter.
Check the cable as well. Leave enough slack that a small movement does not pull the microphone. Keep the cable away from places where a hand or chair will repeatedly touch it.
Keep the voice test unchanged
After each adjustment, repeat the same normal sentence and action. Otherwise a quieter test might only mean that the speaker moved farther from the microphone.
Avoid solving every sound by placing the microphone far away. That can increase room echo and make the voice less clear. Fix the contact or movement creating the noise first. Once the setup is comfortable, ask guests to use the same water and note positions during the interview. Keep a short clean sample so an editor knows what the room sounded like before anything changed.