My husband went to drink and told jokes about studying water and carbon dioxide.

If your husband is drinking and claims that he is studying water and carbon dioxide, it may be a joke or humorous statement. Water and carbon dioxide are very important molecules in biology and chemistry, but they are not the objects that people usually study when drinking.

If your husband is joking with a friend, then he may be imitating the behavior of a scientist or researcher and trying to entertain everyone in this way.

However, if your husband drinks alone and claims that he is studying water and carbon dioxide, he may be trying to cover up the fact that he is drinking, or trying to convince you that he is doing something else. In this case, you can have a good talk with him and express your concern. I hope he can be frank about his drinking problem.