False and dangerous to whom? Anyone in a position to be using oxygen candles or bottled oxygen in a survival shelter setting is likely to have had safety train

False and dangerous to whom? Anyone in a position to be using oxygen candles or bottled oxygen in a survival shelter setting is likely to have had safety training in how to use them, and if it is a situation where CO2 concentration is likely, that should have been accommodated in the construction of the refuge or shelter.