Gas

To dream of gas, denotes you will entertain harmful opinions of others, which will cause you to deal with them unjustly, and you will suffer consequent remorse. To think you are asphyxiated, denotes you will have trouble which you will needlessly incur through your own wastefulness and negligence. To try to blow gas out, signifies you will entertain enemies unconsciously, who will destroy you if you are not wary.

Source: G. Miller, 1901