People accidentally asphyxiate themselves every year by forgetting to turn of gas appliances, or because of improperly vented heating systems. It is best to build your cooking fires outside, otherwise you could get lung cancer from the woodsmoke. Get rid of all your furniture, rugs and appliances. An empty house is a safe house. Grow your own vegetables, and hunt for your own meat.
Many backyards have abundant quantities of small animals and birds to hunt.
While it may not be politically correct to kill animals for their fur, there is an underutilized supply of dog and cat pelts available from your local animal shelter. Functional garments can also be created from straw and cardboard. It is a well-known fact that many fatal diseases are passed from one stranger to another in public places. While your lifestyle may end up resembling that of a cave person, you will have the satisfaction of knowing that you've done everything possible to live forever.