Comments at a recent question How many tea light candles are needed to equal the heat output of a person? suggest that burning a candle can produce water vaper that masses twice as much as the candle

A typical tea light is around 10g so we'd produce nearly 20g of water from that. That's enough to take the humidity of a cubic metre of completely (and unrealistically) dry air up to 100% (i.e. condensing) at 15C

Realistically there are also ventilation issues (as mentioned in comments, question and answer).

Presumably there are similar results for other portable combustables like, propane, etc.

Does warming an enclosed area with an open flame provide help with drying wet fabric?

Comments at a recent question How many tea light candles are needed to equal the heat output of a person? suggest that burning a candle can produce water vapour with mass twice that of the candle:

A typical tea light is around 10g so we'd produce nearly 20g of water from that. That's enough to take the humidity of a cubic metre of completely (and unrealistically) dry air up to 100% (i.e. condensing) at 15°C

Realistically there are also ventilation issues (as mentioned in comments, question and answer).

Presumably there are similar results for other portable combustables like, propane, etc.

Does warming an enclosed area with an open flame provide help with drying wet fabric?