>>I find the smell of sauerkraut offensive and sickening. By your reasoning, a downstairs neighbor who constantly cooked sauerkraut is a slime ball and a scum and should be evicted -- right?
Sure. Absolutely. Keep smells within your walls, or deal with the consequences.
Living in close quarters has consequences that you have to accept before moving in. Certainly there are abuses that are cause for eviction, but what you suggest -- keeping ALL smells and sounds from reaching other tenants -- is simply impossible.