No I'm not using anything. Even after a fresh restart with nothing running but CSS, I get spray sound but it doesn't show.

Edit; Apparently I can't see any sprays. When I look at where I spray it says 'sprayed by schlacko 0:28734234' or whatever the number is, and I see similar when I look at where someone else has sprayed, though I can't see the image.
I'm pretty sure others can see my spray, someone was staring at the spot I sprayed once... but I asked if he could see it and he didn't respond. I asked several times if anyone could see my spray and no one acknowledged me =(