Absolutely. One use of laughter is as a tool to deescalate social tensions - to note to others that there are no ill intentions involved and that the current situation is harmless. In this use, too, it is largely unconscious, and speaks to others unconsciously, meaning suppressing it takes a lot of effort.

If some authoritarian is going on and on about a topic that they claim is extremely important, and someone blurts out a "there is nothing critical going on here" laugh, the whole house of cards comes down in an instant. Authoritarians are rightly terrified of laughter.

you are the media you consume.