Screen Blur when turning screen

hello, i have a script where if u look right/left ur screen tilts that way, im trying to make it where while its tilting the script also turns Blur on, which i have no idea how to make, i dident make this script. Any help?

local Player = game:GetService("Players").LocalPlayer
local Mouse = Player:GetMouse()
local Camera = game:GetService("Workspace").CurrentCamera
local UserInputService = game:GetService("UserInputService")
local Humanoid = Player.Character:WaitForChild("Humanoid")
local bobbing = nil
local func1 = 0
local func2 = 0
local func3 = 0
local func4 = 0
local val = 0
local val2 = 0

-- << Functions >> --

UserInputService.MouseIconEnabled = true

function lerp(a, b, c)
	return a + (b - a) * c
end

bobbing = game:GetService("RunService").RenderStepped:Connect(function(deltaTime)
	deltaTime = deltaTime * 30
	if Humanoid.Health <= 0 then
	end
	local rootMagnitude = Humanoid.RootPart and Vector3.new(Humanoid.RootPart.Velocity.X, 0, Humanoid.RootPart.Velocity.Z).Magnitude or 0
	local calcRootMagnitude = math.min(rootMagnitude, 50)
	Camera.CFrame = Camera.CFrame * (CFrame.fromEulerAnglesXYZ(0, 0, math.rad(func3)) * CFrame.fromEulerAnglesXYZ(math.rad(func4 * deltaTime), math.rad(val * deltaTime), val2) * CFrame.Angles(0, 0, math.rad(func4 * deltaTime * (calcRootMagnitude / 5))) * CFrame.fromEulerAnglesXYZ(math.rad(func1), math.rad(func2), math.rad(func2 * 10)))
	func3 = lerp(func3, math.clamp(UserInputService:GetMouseDelta().X, -5, 5), 0.25 * deltaTime)
	func3 = lerp(func3, math.clamp(UserInputService:GetMouseDelta().Y, -5, 5), 0.25 * deltaTime)
end)