Thank you for your feedback and ideas...I think we have come up with a several prong approach and are in the process of getting it together. In response to your question about a ventilated area, woodsmoke of any kind is a problem for me...if a window is open in the house and someone is burning from a fireplace elsewhere outside I start having breathing problems in the house...generators are ok but it is what kind of fuel to store...our generator would only go a few hours at a time before needing fuel, and we are looking at really long term (weeks, months). We are getting some solar panels and propane tank and propane stove that vents to the outside as well. I am going to talk to my doctor about an oxygen tank for backup for me, even though I don't need one yet now. Thanks EVERYONE for your suggestions...our preparation keeps moving forward! :-)