Cooldown/Debounce not working properly when using .Touched()?

So basically I made a brick that when is touched, its supposed to put fire particles all over your body, play a lava sound from your HumanoidRootPart, and would finally kill you:

function onTouched(hit)
	local debounce = false
	if hit.Parent:findFirstChild("Humanoid") then
		local Humanoid = hit.Parent:findFirstChild("Humanoid")
		local HRP = hit.Parent:findFirstChild("HumanoidRootPart")
		local Torso = hit.Parent:findFirstChild("Torso")
		local Head = hit.Parent:findFirstChild("Head")
		local LeftArm = hit.Parent:findFirstChild("Left Arm")
		local RightArm = hit.Parent:findFirstChild("Right Arm")
		local LeftLeg = hit.Parent:findFirstChild("Left Leg")
		local RightLeg = hit.Parent:findFirstChild("Right Leg")
		if not debounce then
			debounce = true
			wait(0.1)
			if Humanoid and Humanoid.Health > 0 then
				Sound = Instance.new("Sound", HRP)
				Sound.SoundId = "rbxassetid://142472270"
				MakeFire(Torso)
				MakeFire(Head)
				MakeFire(LeftArm)
				MakeFire(RightArm)
				MakeFire(LeftLeg)
				MakeFire(RightLeg)
				Sound.Playing = true
				Humanoid.Parent:BreakJoints()
				print("alive")
				debounce = false
			else
				print("dead")
			end
		end
	end
end

script.Parent.Touched:connect(onTouched)

But my problem is that the code above is supposed to only run once if the character is alive. Even with the cooldown and checking if the player is alive, it still runs multiple times. This leads to more then one sound and particle being made, which just looks bad and sounds wrong.

Here's all of my code if anyone needs it:

function MakeFire(Path)
	Fire = Instance.new("ParticleEmitter", Path)
	Fire.Name = "Fire"
	Fire.Texture = "rbxassetid://275871881"
	Fire.LightEmission = 0.5
	Fire.Rate = 5
	Fire.Lifetime = NumberRange.new(0.5, 1.2)
	Fire.Rotation = NumberRange.new(-360, 360)
	Fire.RotSpeed = NumberRange.new(10, 100)
	Fire.Speed = NumberRange.new(5, 5)
	Fire.Acceleration = Vector3.new(0, 5, 0)
	Fire.Color = ColorSequence.new{
		ColorSequenceKeypoint.new(0, Color3.fromRGB(255, 255, 0)),
		ColorSequenceKeypoint.new(0.323, Color3.fromRGB(255, 170, 0)),
		ColorSequenceKeypoint.new(0.686, Color3.fromRGB(255, 81, 0)),
		ColorSequenceKeypoint.new(1, Color3.fromRGB(255, 0, 0))
	}
	Fire.Size = NumberSequence.new{
		NumberSequenceKeypoint.new(0, 5.07),
		NumberSequenceKeypoint.new(1, 0.25)
	}

	Fire.Transparency = NumberSequence.new{
		NumberSequenceKeypoint.new(0, 1),
		NumberSequenceKeypoint.new(0.284, 0),
		NumberSequenceKeypoint.new(0.863, 0.375),
		NumberSequenceKeypoint.new(0.9, 0),
		NumberSequenceKeypoint.new(1, 1)
	}
	Fire2 = Fire:Clone()
	Fire2.Parent = Path
	Fire.Name = "Fire2"
	Fire.Rate = 15
	Fire2.Size = NumberSequence.new{
		NumberSequenceKeypoint.new(0, 4),
		NumberSequenceKeypoint.new(1, 0.25)
	}

	FireBlur = Instance.new("ParticleEmitter", Path) -- outer blur
	FireBlur.Name = "Blur"
	FireBlur.Texture = "rbxassetid://243664672"
	FireBlur.LightEmission = 0.3
	Fire.Rate = 25
	FireBlur.Lifetime = NumberRange.new(0.5, 1.2)
	FireBlur.RotSpeed = NumberRange.new(-200, 200)
	FireBlur.Speed = NumberRange.new(5, 5)
	FireBlur.Acceleration = Vector3.new(0, 5, 0)
	FireBlur.Color = ColorSequence.new{
		ColorSequenceKeypoint.new(0, Color3.fromRGB(205, 205, 0)),
		ColorSequenceKeypoint.new(0.25, Color3.fromRGB(205, 137, 0)),
		ColorSequenceKeypoint.new(0.5, Color3.fromRGB(205, 68, 0)),
		ColorSequenceKeypoint.new(0.75, Color3.fromRGB(205, 0, 0)),
		ColorSequenceKeypoint.new(1, Color3.fromRGB(120, 0, 0))
	}
	FireBlur.Size = NumberSequence.new{
		NumberSequenceKeypoint.new(0, 4),
		NumberSequenceKeypoint.new(0.4, 2.26),
		NumberSequenceKeypoint.new(0.8, 0.75),
		NumberSequenceKeypoint.new(1, 0)
	}

	FireBlur.Transparency = NumberSequence.new{
		NumberSequenceKeypoint.new(0, 0.325),
		NumberSequenceKeypoint.new(0.306, 0.363),
		NumberSequenceKeypoint.new(0.701, 0.5),
		NumberSequenceKeypoint.new(1, 1)
	}
	FireBlur2 = FireBlur:Clone() -- inner blur
	FireBlur2.Parent = Path
	FireBlur2.Name = "Blur2"
	FireBlur2.LightEmission = 0.5
	FireBlur2.Rate = 15
	FireBlur2.Color = ColorSequence.new{
		ColorSequenceKeypoint.new(0, Color3.fromRGB(255, 255, 0)),
		ColorSequenceKeypoint.new(0.323, Color3.fromRGB(255, 170, 0)),
		ColorSequenceKeypoint.new(0.7, Color3.fromRGB(255, 81, 0)),
		ColorSequenceKeypoint.new(1, Color3.fromRGB(255, 0, 0))
	}
	FireBlur2.Size = NumberSequence.new{
		NumberSequenceKeypoint.new(0, 2),

		NumberSequenceKeypoint.new(1, 0.375)
	}

	FireBlur2.Transparency = NumberSequence.new{
		NumberSequenceKeypoint.new(0, 1),
		NumberSequenceKeypoint.new(0.284, 0),
		NumberSequenceKeypoint.new(0.863, 0.375),
		NumberSequenceKeypoint.new(0.9, 0),
		NumberSequenceKeypoint.new(1, 1)
	}
	Sound.Playing = true
	Sound:Play()
	wait()
	Fire.Size = NumberSequence.new{
		NumberSequenceKeypoint.new(0, 1.69),
		NumberSequenceKeypoint.new(1, 0.25)
	}
	Fire2.Size = NumberSequence.new{
		NumberSequenceKeypoint.new(0, 1.69),
		NumberSequenceKeypoint.new(1, 0.25)
	}
end
function onTouched(hit)
	local debounce = false
	if hit.Parent:findFirstChild("Humanoid") then
		local Humanoid = hit.Parent:findFirstChild("Humanoid")
		local HRP = hit.Parent:findFirstChild("HumanoidRootPart")
		local Torso = hit.Parent:findFirstChild("Torso")
		local Head = hit.Parent:findFirstChild("Head")
		local LeftArm = hit.Parent:findFirstChild("Left Arm")
		local RightArm = hit.Parent:findFirstChild("Right Arm")
		local LeftLeg = hit.Parent:findFirstChild("Left Leg")
		local RightLeg = hit.Parent:findFirstChild("Right Leg")
		if not debounce then
			debounce = true
			wait(0.1)
			if Humanoid and Humanoid.Health > 0 then
				Sound = Instance.new("Sound", HRP)
				Sound.SoundId = "rbxassetid://142472270"
				MakeFire(Torso)
				MakeFire(Head)
				MakeFire(LeftArm)
				MakeFire(RightArm)
				MakeFire(LeftLeg)
				MakeFire(RightLeg)
				Sound.Playing = true
				Humanoid.Parent:BreakJoints()
				print("alive")
				debounce = false
			else
				print("dead")
			end
		end
	end
end

script.Parent.Touched:connect(onTouched)

while true do
	for i = 1,25 do
		wait(0.2)
		for _,v in pairs(script.Parent:GetChildren()) do
			if v:IsA("Texture") then
				v.Texture = string.format("rbxasset://textures/water/normal_d.dds",i)
			end
		end
		wait()
	end
end