Help with a script idea (?)

I do not know how to script a program that you detect if a player has been infected. What I mean infected is (Material of body: Neon; Color: Really red). Alsoooo, how do I clone an item into hit's backpack?

Best would be to do whatever you want in same script that infects others, but if you have no other choice, this should work too:

-- This should be a regular script, as server would be most suitable for this kind of thing
local theTool = pathToInfectedTool

-- Since we want to manipulate with all players, let's just hook up to event for player joining
game.Players.PlayerAdded:connect(function( player )
	-- Since we care about character related events, it is a good idea to hook up the character spawning event too
	player.CharacterAdded:connect(function( char )
		-- Wait for the torso to appear, since it might not get added instantly
		local torso = char:WaitForChild( "Torso" )

		-- Now listen for torso changes, since that will hint you that the character has been infected
		torso.Changed:connect(function( property )
			-- Check if torso material has been changed to neon
			if property == "Material" and torso.Material == "Neon" then
				-- The person got infected
				-- Copy the tool to the player's backpack
				theTool:clone().Parent = player.Backpack
			end
		end)
	end)
end)

Someone is on downvote spree it seems.