How to remove effect from every player in trigger?

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#1 
local handle = script.Parent
local tool = script.Parent.Parent
local spray = tool.spray
local effectMGR = require(game.ReplicatedStorage.EffectManager)

local trigger = tool.ExtinguisherTrigger
local touched

trigger.Touched:Connect(function(otherPart)
	if otherPart.Parent then
		touched = otherPart.Parent
	end
end)

tool.Activated:Connect(function()
	local isBurning = effectMGR.GetStatus(touched,"Burning")
	if isBurning and trigger.Touched then
		effectMGR.RemoveEffect(touched,"Burning")
	end
end)

Hi, I use an effect module that I made myself. It can support both tables AND instances of characters. However, I’m making a fire extinguisher thing that uses a hitbox already in game. How do I make it so that it extinguishes every player that is within the hitbox, and if they leave - they will not be affected anymore?