My downstairs neighbours are HEAVY smokers. The smoke comes up through the walls and floors to my apartment above them and gets so thick my eyes, nose and throat burn from it. It is so thick in my bathroom most days that I can't even shower because I can't be in there for more than a few seconds without feeling ill. I have written them a letter, and also spoken to them in person. They said they'd stop, but they haven't. I have tried to contact my landlord, but he is a bit of a slum lord and avoids me and never responds to me. I can't move because this is the only place that I can afford, I have looked and looked for another place. WHAT CAN I DO??? I feel sick on a daily basis from the smoke. What are my rights?