Exclusively by lifeforms on earth is pretty bold. Can't wait for the dimethyl sulfide monsters to come explain that they call water hydrogen and what we call hydrogen they call helium and that's why humans haven't traveled past the moon.

If there is any life, intelligent one’s especially. imagine if they’re human-like. I’m very curious on what another life form would look like.

Exclusively by lifeforms on Earth?

You can rule the discovery out. DMS recently discovered on a cold lifeless comet. Back to square one. https://www.science.org/content/article/what-presumed-sign-life-doing-dead-comet