Okay, ignoring carbon monoxide contamination. The site also states: "Oxygen cylinders are used in the event compressed air fails and generally require the suppo

Okay, ignoring carbon monoxide contamination. The site also states: "Oxygen cylinders are used in the event compressed air fails and generally require the support of a scrubbing system to remove carbon dioxide and carbon monoxide from the air." If Oxygen cylinders generally require a scrubber I think it's safe to assume that a Oxygen candle will also need a scrubber. They list issues with other systems but don't acknowledge the same problems that exist with their own.