Does anyone have any concerns about the peel and seal roofing products and off gasing? I certainly don't mean to be a wieny, (and believe me I have put my lungs through h*ll and back over the years) but someone mentioned toxicity regarding gases in thread awhile back. I looked at a roll at home depot and it said, 'not for use in interior locations' and 'known to cause cancer by California' Any real concerns here?