//using env_fire_medium_smoke is just a example...
//other particles may look better
//like: "burning_character"
new firefx = CreateParticleSystem(victim, "env_fire_medium_smoke", true, "rfoot", _);

// ------------------------------------------------------------------------
// CreateParticleSystem()
// ------------------------------------------------------------------------
// >> Original code by J-Factor
// ------------------------------------------------------------------------
stock CreateParticleSystem(iClient, String:strParticle[], bool:bAttach = false, String:strAttachmentPoint[]="", Float:fOffset[3]={0.0, 0.0, 0.0})
{
    new iParticle = CreateEntityByName("info_particle_system");
    if (IsValidEdict(iParticle))
    {
        decl Float:fPosition[3];
        decl Float:fAngles[3];
        decl Float:fForward[3];
        decl Float:fRight[3];
        decl Float:fUp[3];
        
        // Retrieve entity's position and angles
        GetClientAbsOrigin(iClient, fPosition);
        GetClientAbsAngles(iClient, fAngles);
        
        // Determine vectors and apply offset
        GetAngleVectors(fAngles, fForward, fRight, fUp);    // I assume 'x' is Right, 'y' is Forward and 'z' is Up
        fPosition[0] += fRight[0]*fOffset[0] + fForward[0]*fOffset[1] + fUp[0]*fOffset[2];
        fPosition[1] += fRight[1]*fOffset[0] + fForward[1]*fOffset[1] + fUp[1]*fOffset[2];
        fPosition[2] += fRight[2]*fOffset[0] + fForward[2]*fOffset[1] + fUp[2]*fOffset[2];
        
        // Teleport and attach to client
        TeleportEntity(iParticle, fPosition, fAngles, NULL_VECTOR);
        DispatchKeyValue(iParticle, "effect_name", strParticle);

        if (bAttach == true)
        {
            SetVariantString("!activator");
            AcceptEntityInput(iParticle, "SetParent", iClient, iParticle, 0);            
            
            if (StrEqual(strAttachmentPoint, "") == false)
            {
                SetVariantString(strAttachmentPoint);
                AcceptEntityInput(iParticle, "SetParentAttachmentMaintainOffset", iParticle, iParticle, 0);                
            }
        }

        // Spawn and start
        DispatchSpawn(iParticle);
        ActivateEntity(iParticle);
        AcceptEntityInput(iParticle, "Start");
    }

    return iParticle;
}