Is my vodka bad?

I have some Bennetts flavored vodka that’s been sitting in my fridge opened for like two years and 1/3-1/4 left in them .

I opened my coconut flavored one(1/4 left) and it made a hissing nois so I tossed that because ik vodka isn’t carbonated and shouldn’t hiss so the hissing could be possible contamination from bacteria.

My watermelon one (1/3 left) didn’t hiss when I opened it but both of them had teeny tiny particles. When researching there was a lot of stuff about “white” particles caused by not being filtered enough or from being cold like in a freezer or fridge. These were not really white though the were barely noticeable. But I could still see them with my eye and when I shined a light on it there was a lot.

I live alone though and never watered it down they were always stored in the fridge. Taste and smell don’t seem off to me. Not cloudy or discolored, when I don’t put the bottle close to my eye it looks clear. Should I just throw away the watermelon one too? Or am I being dumb and wasted the coconut one?