Noise suppression tries to reduce unwanted background sound. It can be useful, but a quieter background does not always mean a more natural voice. Strong processing may change soft words or the ends of sentences.
Compare the same material
Record a short passage containing normal speech, a quiet sentence and a pause. If the recording setup exposes a noise-suppression choice, capture the passage with the setting off and on. Keep microphone position and gain the same.
Listen for the voice first. Are word endings complete? Does a quiet phrase fade away unexpectedly? Then listen to the pause and compare the background. Choose the version that makes the conversation easier to understand, not simply the one with the smallest waveform between words.
Browsers and devices do not all expose the same processing controls. A requested setting and the setting actually applied can differ. The recording tool's current behavior matters more than a generic list of browser features.
Improve the source before increasing processing
Move a noisy fan away from the microphone when practical. Reduce desk noise and choose a better room position. These changes can help without asking software to distinguish every noise from the voice.
For remote recordings, check whether the setting affects the live call, the local saved track or both. Do not assume that one control changes every audio path.
Save a short example of the chosen setup and note the setting. If a guest changes devices, repeat the comparison. A small test gives you evidence for that particular voice and room, while a copied setting from another interview may not.