How can i re-enabled this script after a 4 secs?

Hi so ive got this little script that ive been working on

while wait(4.090) do
script.Disabled = true

function onTouch(part) 
	local humanoid = part.Parent:FindFirstChild("Humanoid") 
	if (humanoid ~= nil) then	
		humanoid.Health = 0	
		while wait(4.090) do
	end 
end

script.Parent.Touched:connect(onTouch)
end
end

this is used to make a "part" becoming deadly after 4.090 sec, what i want is that the part become deadly while like 2 sec and after it become passive, and after it wait again 4 sec to become deadly, i have a idea of what im trying to do here but need some help

This should change the way that it works. In a positive way.

local Disabled = false

script.Parent.Touched:Connect(function(part)
	local humanoid = part.Parent:FindFirstChild("Humanoid")
	
	if humanoid ~= nil and Disabled = false then   
		humanoid.Health = 0
		Disabled = true
		wait(2)
		Disabled = false
	else
		return
	end 
end

If the script disables itself, it won't run the rest of the script. Instead of disabling itself, it should set a variable to true, and while it's true, it can kill. While false, it does nothing.