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So I just had a wank and came up with a even greater Idea
We need to restructure our whole businessplan: The smoke is coming from below, the sink to be percise.
Thus we can achieve double perculation with the bowl and the flush.
Due to the ring the smoke would get spread out and united again, creating an even smoother flow.
If we manage to get a non-toxic fluid in the sink outlet, we could use the sink itself as a lighter.