There is nothing irrational about your fears, they are your fears and
your fears alone. What you don't have is the right to foist your
irrationality and fears upon the rest of society. You are free to live
on your property and live your irrational and fear filled life all alone
without interference from anyone.
Again, it WOULD be irrational for me to tell someone not to smoke
because they are harming themselves. I don't care how much someone
smokes. Go ahead, get lung cancer, throat cancer, stomach cancer. I
don't care. But smoking goes way beyond that, in that it directly harms
others. I don't have a "fear filled life". But the fact remains, second
hand smoke causes disease and death in innocent bystanders.