I just moved into an apartment. I am renting the downstairs. My problem is I live downstairs and my neighbor lives upstairs. He is a heavy smoker and I am not. It makes me sick. There is two vents in which I feel the smoke is coming from. One vent is next to my daughters room. Do you have any suggestions on how to get rid of the smell and avoid the smoke coming through. This house was built in the late 1800's. I have read something about smoke sponge product. Do you know anything about this. Please help... thank you.