[SpookyZalost]

Exactly but this life isn't on the planet's surface but in it's clouds which is kinda cool.

some kind of floating microbes drifting on air currents and expelling phosphine as a byproduct of whatever it eats/breaths/etc.

for all we know it's consuming the acid in the clouds and stripping the sulfur and such.

@brian51 here's what we know about mars.

there's methane being expelled from beneath the surface in a few areas.

sub surface brine lakes near the poles.

and that it had liquid water on it's surface millenia ago, and occasionally does today when the conditions are right but only for very brief periods.

Titan has an unknown process creating atmospheric chemestry where it's too cold but might be the byproduct of life consuming the hydrocarbon lakes on it's surface.

venus is sort of the opposite in that it's too hot and acidic normally but the phosphine is collecting in far more hospitable regions in the clouds layers above the surface making for something a bit more foreign to what we're used to.