That's the problem with trimethilamine. It`s so strong that it will find its way even through closed windows or any way it could.
Athough she must be allergic since other neighbors don`t have a nearly similar reactions.
Now the question is - should I tell her? On the one hand, I`m very sorry for what happened to her, on the other is a bit embarrassed to admit that is because of me. And even if I tell her what she`s supposed to do? To move out? Awful situation.
I think we all should insist on such problems at corresponding levels. Maybe they would hurry up a bit with finding a cure if they realize the problem is not individual but common.