Help! We will be taking a 35 day cruise from Boston to Canada, Greenland, Iceland, etc. and back to Boston. With the current smoke concentration coming from Canada, I am concerned that the ships HVAC system will not remove enough smoke to keep me out of the hospital, even if I stay in my room. I have been using N95 masks for 20 years and have several HEPA filters in our home so we want to bring a small HEPA filter with us. I asked Ships Services and was told it was not necessary because they have HEPA filters in the cabins. I am not convinced. There have been cruises where I can smell perfume from other rooms inside ours and we don't use anything scented. How do I find out if the ship does have HEPA filters in their HVAC system?