Actually, a propane stove can be used indoors
**IF** there is sufficient ventilation
**AND** if it is used briefly. Same thing goes for a Coleman Stove.
So, if the weather isn't too bad, open a window. If it is too bad to open the window all the way, open several windows an inch or so to encourage a drift of air flow across the room / home.
Canned foods *do* need to be heated - especially if they are dented. Bring them to a boil and keep them at a boil for 15 minutes to kill any bacteria and destroy their toxins. This would have saved the lives of many people who have died from botulism, E. coli, Salmonella and Staph food poisonings.
There are home emergency kit recommendations available through
FEMA's Preparation and Prevention page
You will need to scroll down toward the bottom to the "Planning and Preparing" section.
Cheerio!
Elizabeth