Gmod Team-Fortress 2 blood

Hello I seem to be having a problem that is ment to be fixed.
When I mount team-fortress 2 the blood turns into the team-fortress 2 blood, and the zombie/alien blood splatter when you shoot them is gone.
This annoys me because I use team fortress 2 for textures and models ect.
I also use it for sweps and stuff, I really don’t want to unmount team fortress 2 just to fix it even though it does.
If someone would be kind enough to help me out on this problem then that would be very nice.
Please someone get back to me soon I’m very frustrated about this.
Thank you.