I don't think the dangers of a buddy heater are the CO. However it does have a low O2 shutoff that works as designed. It is a challenge to keep it lit above 8kft and about impossible at 9kft altitude.
Aside from the obvious potential for a fire hazard (I still use mine in a trailer), the biggest downside is moisture. Not being vented, it makes alot of moisture. Couple days and dryout, no problem. Extended camping, hard to keep dry.
I'd still look for an alternate. More convenient and drier to have forced air heat, IMO.
